diff --git a/core/api/test-current.txt b/core/api/test-current.txt
index da5b88bbfbf40..61d6a7eef084e 100644
--- a/core/api/test-current.txt
+++ b/core/api/test-current.txt
@@ -3393,6 +3393,7 @@ package android.window {
     method @NonNull public android.window.WindowContainerTransaction createTaskFragment(@NonNull android.window.TaskFragmentCreationParams);
     method @NonNull public android.window.WindowContainerTransaction deleteTaskFragment(@NonNull android.window.WindowContainerToken);
     method public int describeContents();
+    method @NonNull public android.window.WindowContainerTransaction removeTask(@NonNull android.window.WindowContainerToken);
     method @NonNull public android.window.WindowContainerTransaction reorder(@NonNull android.window.WindowContainerToken, boolean);
     method @NonNull public android.window.WindowContainerTransaction reparent(@NonNull android.window.WindowContainerToken, @Nullable android.window.WindowContainerToken, boolean);
     method @NonNull public android.window.WindowContainerTransaction reparentActivityToTaskFragment(@NonNull android.os.IBinder, @NonNull android.os.IBinder);
diff --git a/core/java/android/window/WindowContainerTransaction.java b/core/java/android/window/WindowContainerTransaction.java
index 567b1642b6204..0eb037c6f0941 100644
--- a/core/java/android/window/WindowContainerTransaction.java
+++ b/core/java/android/window/WindowContainerTransaction.java
@@ -455,6 +455,17 @@ public final class WindowContainerTransaction implements Parcelable {
         return this;
     }
 
+    /**
+     * Finds and removes a task and its children using its container token. The task is removed
+     * from recents.
+     * @param containerToken ContainerToken of Task to be removed
+     */
+    @NonNull
+    public WindowContainerTransaction removeTask(@NonNull WindowContainerToken containerToken) {
+        mHierarchyOps.add(HierarchyOp.createForRemoveTask(containerToken.asBinder()));
+        return this;
+    }
+
     /**
      * Sends a pending intent in sync.
      * @param sender The PendingIntent sender.
@@ -1154,6 +1165,7 @@ public final class WindowContainerTransaction implements Parcelable {
         public static final int HIERARCHY_OP_TYPE_REMOVE_INSETS_PROVIDER = 17;
         public static final int HIERARCHY_OP_TYPE_REQUEST_FOCUS_ON_TASK_FRAGMENT = 18;
         public static final int HIERARCHY_OP_TYPE_SET_ALWAYS_ON_TOP = 19;
+        public static final int HIERARCHY_OP_TYPE_REMOVE_TASK = 20;
 
         // The following key(s) are for use with mLaunchOptions:
         // When launching a task (eg. from recents), this is the taskId to be launched.
@@ -1283,6 +1295,13 @@ public final class WindowContainerTransaction implements Parcelable {
                     .build();
         }
 
+        /** create a hierarchy op for deleting a task **/
+        public static HierarchyOp createForRemoveTask(@NonNull IBinder container) {
+            return new HierarchyOp.Builder(HIERARCHY_OP_TYPE_REMOVE_TASK)
+                    .setContainer(container)
+                    .build();
+        }
+
         /** Only creates through {@link Builder}. */
         private HierarchyOp(int type) {
             mType = type;
@@ -1466,6 +1485,8 @@ public final class WindowContainerTransaction implements Parcelable {
                 case HIERARCHY_OP_TYPE_SET_ALWAYS_ON_TOP:
                     return "{setAlwaysOnTop: container=" + mContainer
                             + " alwaysOnTop=" + mAlwaysOnTop + "}";
+                case HIERARCHY_OP_TYPE_REMOVE_TASK:
+                    return "{RemoveTask: task=" + mContainer + "}";
                 default:
                     return "{mType=" + mType + " container=" + mContainer + " reparent=" + mReparent
                             + " mToTop=" + mToTop
diff --git a/libs/WindowManager/Shell/src/com/android/wm/shell/freeform/FreeformTaskTransitionHandler.java b/libs/WindowManager/Shell/src/com/android/wm/shell/freeform/FreeformTaskTransitionHandler.java
index a1e9f938d280a..0e76c3388e5ee 100644
--- a/libs/WindowManager/Shell/src/com/android/wm/shell/freeform/FreeformTaskTransitionHandler.java
+++ b/libs/WindowManager/Shell/src/com/android/wm/shell/freeform/FreeformTaskTransitionHandler.java
@@ -97,6 +97,12 @@ public class FreeformTaskTransitionHandler
         mPendingTransitionTokens.add(mTransitions.startTransition(type, wct, this));
     }
 
+    @Override
+    public void startRemoveTransition(WindowContainerTransaction wct) {
+        final int type = WindowManager.TRANSIT_CLOSE;
+        mPendingTransitionTokens.add(mTransitions.startTransition(type, wct, this));
+    }
+
     @Override
     public boolean startAnimation(@NonNull IBinder transition, @NonNull TransitionInfo info,
             @NonNull SurfaceControl.Transaction startT,
diff --git a/libs/WindowManager/Shell/src/com/android/wm/shell/freeform/FreeformTaskTransitionStarter.java b/libs/WindowManager/Shell/src/com/android/wm/shell/freeform/FreeformTaskTransitionStarter.java
index c947cf1b8cd1c..8da4c6ab4b366 100644
--- a/libs/WindowManager/Shell/src/com/android/wm/shell/freeform/FreeformTaskTransitionStarter.java
+++ b/libs/WindowManager/Shell/src/com/android/wm/shell/freeform/FreeformTaskTransitionStarter.java
@@ -40,4 +40,12 @@ public interface FreeformTaskTransitionStarter {
      *
      */
     void startMinimizedModeTransition(WindowContainerTransaction wct);
+
+    /**
+     * Starts close window transition
+     *
+     * @param wct the {@link WindowContainerTransaction} that closes the task
+     *
+     */
+    void startRemoveTransition(WindowContainerTransaction wct);
 }
\ No newline at end of file
diff --git a/libs/WindowManager/Shell/src/com/android/wm/shell/windowdecor/CaptionWindowDecorViewModel.java b/libs/WindowManager/Shell/src/com/android/wm/shell/windowdecor/CaptionWindowDecorViewModel.java
index e7695926d2446..f7250a24d80b8 100644
--- a/libs/WindowManager/Shell/src/com/android/wm/shell/windowdecor/CaptionWindowDecorViewModel.java
+++ b/libs/WindowManager/Shell/src/com/android/wm/shell/windowdecor/CaptionWindowDecorViewModel.java
@@ -148,7 +148,13 @@ public class CaptionWindowDecorViewModel implements WindowDecorViewModel<Caption
         public void onClick(View v) {
             final int id = v.getId();
             if (id == R.id.close_window) {
-                mActivityTaskManager.removeTask(mTaskId);
+                WindowContainerTransaction wct = new WindowContainerTransaction();
+                wct.removeTask(mTaskToken);
+                if (Transitions.ENABLE_SHELL_TRANSITIONS) {
+                    mTransitionStarter.startRemoveTransition(wct);
+                } else {
+                    mSyncQueue.queue(wct);
+                }
             } else if (id == R.id.maximize_window) {
                 WindowContainerTransaction wct = new WindowContainerTransaction();
                 RunningTaskInfo taskInfo = mTaskOrganizer.getRunningTaskInfo(mTaskId);
diff --git a/services/core/java/com/android/server/wm/WindowOrganizerController.java b/services/core/java/com/android/server/wm/WindowOrganizerController.java
index 3b9cd368a93bb..8992e5531548b 100644
--- a/services/core/java/com/android/server/wm/WindowOrganizerController.java
+++ b/services/core/java/com/android/server/wm/WindowOrganizerController.java
@@ -29,6 +29,7 @@ import static android.window.WindowContainerTransaction.HierarchyOp.HIERARCHY_OP
 import static android.window.WindowContainerTransaction.HierarchyOp.HIERARCHY_OP_TYPE_LAUNCH_TASK;
 import static android.window.WindowContainerTransaction.HierarchyOp.HIERARCHY_OP_TYPE_PENDING_INTENT;
 import static android.window.WindowContainerTransaction.HierarchyOp.HIERARCHY_OP_TYPE_REMOVE_INSETS_PROVIDER;
+import static android.window.WindowContainerTransaction.HierarchyOp.HIERARCHY_OP_TYPE_REMOVE_TASK;
 import static android.window.WindowContainerTransaction.HierarchyOp.HIERARCHY_OP_TYPE_REORDER;
 import static android.window.WindowContainerTransaction.HierarchyOp.HIERARCHY_OP_TYPE_REPARENT;
 import static android.window.WindowContainerTransaction.HierarchyOp.HIERARCHY_OP_TYPE_REPARENT_ACTIVITY_TO_TASK_FRAGMENT;
@@ -720,6 +721,12 @@ class WindowOrganizerController extends IWindowOrganizerController.Stub
             @Nullable ITaskFragmentOrganizer organizer, @Nullable Transition finishTransition) {
         final int type = hop.getType();
         switch (type) {
+            case HIERARCHY_OP_TYPE_REMOVE_TASK: {
+                final WindowContainer wc = WindowContainer.fromBinder(hop.getContainer());
+                final Task task = wc != null ? wc.asTask() : null;
+                task.remove(true, "Applying remove task Hierarchy Op");
+                break;
+            }
             case HIERARCHY_OP_TYPE_SET_LAUNCH_ROOT: {
                 final WindowContainer wc = WindowContainer.fromBinder(hop.getContainer());
                 final Task task = wc != null ? wc.asTask() : null;
diff --git a/services/tests/wmtests/src/com/android/server/wm/WindowContainerTransactionTests.java b/services/tests/wmtests/src/com/android/server/wm/WindowContainerTransactionTests.java
new file mode 100644
index 0000000000000..d2552718f2181
--- /dev/null
+++ b/services/tests/wmtests/src/com/android/server/wm/WindowContainerTransactionTests.java
@@ -0,0 +1,89 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.server.wm;
+
+import static com.android.dx.mockito.inline.extended.ExtendedMockito.verify;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNotNull;
+import static org.junit.Assert.assertNull;
+import static org.junit.Assert.assertTrue;
+import static org.mockito.Mockito.atLeast;
+
+import android.content.Intent;
+import android.platform.test.annotations.Presubmit;
+import android.window.WindowContainerToken;
+import android.window.WindowContainerTransaction;
+
+import androidx.annotation.NonNull;
+import androidx.test.filters.SmallTest;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+/**
+ * Test class for {@link WindowContainerTransaction}.
+ *
+ * Build/Install/Run:
+ *  atest WmTests:WindowContainerTransactionTests
+ */
+@SmallTest
+@Presubmit
+@RunWith(WindowTestRunner.class)
+public class WindowContainerTransactionTests extends WindowTestsBase {
+
+    @Test
+    public void testRemoveTask() {
+        final Task rootTask = createTask(mDisplayContent);
+        final Task task = createTaskInRootTask(rootTask, 0 /* userId */);
+        final ActivityRecord activity = createActivityRecord(mDisplayContent, task);
+
+        WindowContainerTransaction wct = new WindowContainerTransaction();
+        WindowContainerToken token = task.getTaskInfo().token;
+        wct.removeTask(token);
+        applyTransaction(wct);
+
+        // There is still an activity to be destroyed, so the task is not removed immediately.
+        assertNotNull(task.getParent());
+        assertTrue(rootTask.hasChild());
+        assertTrue(task.hasChild());
+        assertTrue(activity.finishing);
+
+        activity.destroyed("testRemoveContainer");
+        // Assert that the container was removed after the activity is destroyed.
+        assertNull(task.getParent());
+        assertEquals(0, task.getChildCount());
+        assertNull(activity.getParent());
+        verify(mAtm.getLockTaskController(), atLeast(1)).clearLockedTask(task);
+        verify(mAtm.getLockTaskController(), atLeast(1)).clearLockedTask(rootTask);
+    }
+
+    private Task createTask(int taskId) {
+        return new Task.Builder(mAtm)
+                .setTaskId(taskId)
+                .setIntent(new Intent())
+                .setRealActivity(ActivityBuilder.getDefaultComponent())
+                .setEffectiveUid(10050)
+                .buildInner();
+    }
+
+    private void applyTransaction(@NonNull WindowContainerTransaction t) {
+        if (!t.isEmpty()) {
+            mWm.mAtmService.mWindowOrganizerController.applyTransaction(t);
+        }
+    }
+}