diff --git a/pkg/server/events.go b/pkg/server/events.go
index 665fb2021..1ff70c788 100644
--- a/pkg/server/events.go
+++ b/pkg/server/events.go
@@ -120,6 +120,13 @@ func (c *criContainerdService) handleEvent(e *task.Event) {
 			return
 		}
 	case task.Event_OOM:
-		// TODO(random-liu): [P1] Handle OOM event.
+		err := c.containerStore.Update(e.ID, func(meta metadata.ContainerMetadata) (metadata.ContainerMetadata, error) {
+			meta.Reason = oomExitReason
+			return meta, nil
+		})
+		if err != nil && !metadata.IsNotExistError(err) {
+			glog.Errorf("Failed to update container %q oom: %v", e.ID, err)
+			return
+		}
 	}
 }
diff --git a/pkg/server/events_test.go b/pkg/server/events_test.go
index b56ed1b0e..b3ed3a83a 100644
--- a/pkg/server/events_test.go
+++ b/pkg/server/events_test.go
@@ -100,13 +100,11 @@ func TestHandleEvent(t *testing.T) {
 			containerdErr:       fmt.Errorf("random error"),
 			expected:            &testMetadata,
 		},
-		"should not update state for non-exited events": {
+		"should not update state for irrelevant events": {
 			event: &task.Event{
-				ID:         testID,
-				Type:       task.Event_OOM,
-				Pid:        testPid,
-				ExitStatus: 1,
-				ExitedAt:   testExitedAt,
+				ID:   testID,
+				Type: task.Event_PAUSED,
+				Pid:  testPid,
 			},
 			metadata:            &testMetadata,
 			containerdContainer: &testContainerdContainer,
@@ -123,6 +121,22 @@ func TestHandleEvent(t *testing.T) {
 			containerdContainer: &testContainerdContainer,
 			expected:            &testFinishedMetadata,
 		},
+		"should update exit reason when container is oom killed": {
+			event: &task.Event{
+				ID:   testID,
+				Type: task.Event_OOM,
+			},
+			metadata: &testMetadata,
+			expected: &metadata.ContainerMetadata{
+				ID:        testID,
+				Name:      "test-name",
+				SandboxID: "test-sandbox-id",
+				Pid:       testPid,
+				CreatedAt: testCreatedAt,
+				StartedAt: testStartedAt,
+				Reason:    oomExitReason,
+			},
+		},
 	} {
 		t.Logf("TestCase %q", desc)
 		c := newTestCRIContainerdService()
diff --git a/pkg/server/helpers.go b/pkg/server/helpers.go
index dca23130d..546bc638b 100644
--- a/pkg/server/helpers.go
+++ b/pkg/server/helpers.go
@@ -50,6 +50,8 @@ const (
 	completeExitReason = "Completed"
 	// errorExitReason is the exit reason when container exits with code non-zero.
 	errorExitReason = "Error"
+	// oomExitReason is the exit reason when process in container is oom killed.
+	oomExitReason = "OOMKilled"
 	// unknownExitCode is the exit code when exit reason is unknown.
 	unknownExitCode = 255
 )