diff --git a/src/amf/ngap-handler.c b/src/amf/ngap-handler.c
index f1aae60ac..1257b5b49 100644
--- a/src/amf/ngap-handler.c
+++ b/src/amf/ngap-handler.c
@@ -1400,6 +1400,15 @@ void ngap_handle_ue_context_release_action(ran_ue_t *ran_ue)
             ran_ue->ran_ue_ngap_id, (long long)ran_ue->amf_ue_ngap_id);
     if (amf_ue) {
         ogs_info("    SUCI[%s]", amf_ue->suci ? amf_ue->suci : "Unknown");
+
+        /*
+         * An assert occurs when a NAS message retransmission occurs.
+         *
+         * Because there is no `ran_ue` context.
+         * 
+         * Therefore, before removing `ran_ue`, all Timers must be stopped
+         * to prevent retransmission of NAS messages.
+         */
         CLEAR_AMF_UE_ALL_TIMERS(amf_ue);
     }
 
diff --git a/src/mme/mme-context.h b/src/mme/mme-context.h
index cfe870d6c..5f7691183 100644
--- a/src/mme/mme-context.h
+++ b/src/mme/mme-context.h
@@ -422,11 +422,20 @@ struct mme_ue_s {
 
 #define CLEAR_MME_UE_ALL_TIMERS(__mME) \
     do { \
+        mme_sess_t *sess = NULL; \
+        mme_bearer_t *bearer = NULL; \
+        \
         CLEAR_MME_UE_TIMER((__mME)->t3413); \
         CLEAR_MME_UE_TIMER((__mME)->t3422); \
         CLEAR_MME_UE_TIMER((__mME)->t3450); \
         CLEAR_MME_UE_TIMER((__mME)->t3460); \
         CLEAR_MME_UE_TIMER((__mME)->t3470); \
+        \
+        ogs_list_for_each(&mme_ue->sess_list, sess) { \
+            ogs_list_for_each(&sess->bearer_list, bearer) { \
+                CLEAR_BEARER_ALL_TIMERS(bearer); \
+            } \
+        } \
     } while(0);
 #define CLEAR_MME_UE_TIMER(__mME_UE_TIMER) \
     do { \
diff --git a/src/mme/s1ap-handler.c b/src/mme/s1ap-handler.c
index 72e9e23d6..eefa1346d 100644
--- a/src/mme/s1ap-handler.c
+++ b/src/mme/s1ap-handler.c
@@ -1385,6 +1385,15 @@ void s1ap_handle_ue_context_release_action(enb_ue_t *enb_ue)
             enb_ue->enb_ue_s1ap_id, enb_ue->mme_ue_s1ap_id);
     if (mme_ue) {
         ogs_info("    IMSI[%s]", mme_ue->imsi_bcd);
+
+        /*
+         * An assert occurs when a NAS message retransmission occurs.
+         *
+         * Because there is no `enb_ue` context.
+         * 
+         * Therefore, before removing enb_ue, all Timers must be stopped
+         * to prevent retransmission of NAS messages.
+         */
         CLEAR_MME_UE_ALL_TIMERS(mme_ue);
     }