diff --git a/apps/artemis/src/main/java/org/onosproject/artemis/impl/ArtemisEvent.java b/apps/artemis/src/main/java/org/onosproject/artemis/impl/ArtemisEvent.java
new file mode 100644
index 0000000..38deac7
--- /dev/null
+++ b/apps/artemis/src/main/java/org/onosproject/artemis/impl/ArtemisEvent.java
@@ -0,0 +1,93 @@
+/*
+ * Copyright 2017-present Open Networking Foundation
+ *
+ * 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 org.onosproject.artemis.impl;
+
+import com.google.common.base.MoreObjects;
+import org.onosproject.event.AbstractEvent;
+
+import java.util.Objects;
+
+/**
+ * Artemis event.
+ */
+public class ArtemisEvent extends AbstractEvent<ArtemisEvent.Type, Object> {
+
+    /**
+     * Creates an event of a given type and for the specified state and the
+     * current time.
+     *
+     * @param type    upgrade event type
+     * @param subject upgrade state
+     */
+    protected ArtemisEvent(Type type, Object subject) {
+        super(type, subject);
+    }
+
+    /**
+     * Creates an event of a given type and for the specified state and time.
+     *
+     * @param type    upgrade event type
+     * @param subject upgrade state
+     * @param time    occurrence time
+     */
+    protected ArtemisEvent(Type type, Object subject, long time) {
+        super(type, subject, time);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(type(), subject(), time());
+    }
+
+    @Override
+    public boolean equals(Object obj) {
+        if (this == obj) {
+            return true;
+        }
+        if (obj instanceof ArtemisEvent) {
+            final ArtemisEvent other = (ArtemisEvent) obj;
+            return Objects.equals(this.type(), other.type()) &&
+                    Objects.equals(this.subject(), other.subject()) &&
+                    Objects.equals(this.time(), other.time());
+        }
+        return false;
+    }
+
+    @Override
+    public String toString() {
+        return MoreObjects.toStringHelper(this.getClass())
+                .add("type", type())
+                .add("subject", subject())
+                .add("time", time())
+                .toString();
+    }
+
+    /**
+     * Type of artemis-related events.
+     */
+    public enum Type {
+
+        /**
+         * Indicates that a hijack was detected.
+         */
+        HIJACK_ADDED,
+
+        /**
+         * Indicates that a bgp update message was received.
+         */
+        BGPUPDATE_ADDED,
+    }
+}