diff --git a/app/src/main/java/org/iilab/pb/alert/PanicAlert.java b/app/src/main/java/org/iilab/pb/alert/PanicAlert.java
index 37ce7b7e..063bdbc2 100644
--- a/app/src/main/java/org/iilab/pb/alert/PanicAlert.java
+++ b/app/src/main/java/org/iilab/pb/alert/PanicAlert.java
@@ -22,6 +22,8 @@
 import java.util.concurrent.ExecutorService;
 import java.util.concurrent.Executors;
 
+import info.guardianproject.panic.PanicTrigger;
+
 import static android.location.LocationManager.GPS_PROVIDER;
 import static android.location.LocationManager.NETWORK_PROVIDER;
 import static org.iilab.pb.common.Intents.locationPendingIntent;
@@ -67,6 +69,8 @@ private void vibrateOnce() {
 
     private void activateAlert() {
         ApplicationSettings.setAlertActive(context, true);
+        // send panic triggers to responder apps that support it
+        PanicTrigger.sendTrigger(context);
         sendFirstAlert();
         registerLocationUpdate();
         scheduleFutureAlert();