diff --git a/include/osmocom/hnbgw/hnbgw.h b/include/osmocom/hnbgw/hnbgw.h
index b3ba3b2..8daf713 100644
--- a/include/osmocom/hnbgw/hnbgw.h
+++ b/include/osmocom/hnbgw/hnbgw.h
@@ -100,6 +100,8 @@ enum hnb_rate_ctr {
 
 	HNB_CTR_RANAP_PS_RAB_REL_REQ,
 	HNB_CTR_RANAP_CS_RAB_REL_REQ,
+	HNB_CTR_RANAP_PS_RAB_REL_REQ_ABNORMAL,
+	HNB_CTR_RANAP_CS_RAB_REL_REQ_ABNORMAL,
 
 	HNB_CTR_RANAP_PS_RAB_REL_CNF,
 	HNB_CTR_RANAP_CS_RAB_REL_CNF,
@@ -109,6 +111,8 @@ enum hnb_rate_ctr {
 
 	HNB_CTR_RANAP_PS_RAB_REL_IMPLICIT,
 	HNB_CTR_RANAP_CS_RAB_REL_IMPLICIT,
+	HNB_CTR_RANAP_PS_RAB_REL_IMPLICIT_ABNORMAL,
+	HNB_CTR_RANAP_CS_RAB_REL_IMPLICIT_ABNORMAL,
 
 	HNB_CTR_RUA_ERR_IND,
 
diff --git a/src/osmo-hnbgw/hnbgw.c b/src/osmo-hnbgw/hnbgw.c
index 64bb66f..fe29c29 100644
--- a/src/osmo-hnbgw/hnbgw.c
+++ b/src/osmo-hnbgw/hnbgw.c
@@ -398,11 +398,14 @@ const struct rate_ctr_desc hnb_ctr_description[] = {
 	[HNB_CTR_RANAP_CS_RAB_MOD_FAIL] = {
 		"ranap:cs:rab_mod:fail", "CS RAB Modifications failed" },
 
-
 	[HNB_CTR_RANAP_PS_RAB_REL_REQ] = {
-		"ranap:ps:rab_rel:req", "PS RAB Release requested" },
+		"ranap:ps:rab_rel:req:normal", "PS RAB Release requested (by CN), normal" },
 	[HNB_CTR_RANAP_CS_RAB_REL_REQ] = {
-		"ranap:cs:rab_rel:req", "CS RAB Release requested" },
+		"ranap:cs:rab_rel:req:normal", "CS RAB Release requested (by CN), normal" },
+	[HNB_CTR_RANAP_PS_RAB_REL_REQ_ABNORMAL] = {
+		"ranap:ps:rab_rel:req:abnormal", "PS RAB Release requested (by CN), abnormal" },
+	[HNB_CTR_RANAP_CS_RAB_REL_REQ_ABNORMAL] = {
+		"ranap:cs:rab_rel:req:abnormal", "CS RAB Release requested (by CN), abnormal" },
 
 	[HNB_CTR_RANAP_PS_RAB_REL_CNF] = {
 		"ranap:ps:rab_rel:cnf", "PS RAB Release confirmed" },
@@ -415,9 +418,13 @@ const struct rate_ctr_desc hnb_ctr_description[] = {
 		"ranap:cs:rab_rel:fail", "CS RAB Release failed" },
 
 	[HNB_CTR_RANAP_PS_RAB_REL_IMPLICIT] = {
-		"ranap:ps:rab_rel:implicit", "PS RAB Release implicit (during Iu Release)" },
+		"ranap:ps:rab_rel:implicit:normal", "PS RAB Release implicit (during Iu Release), normal" },
 	[HNB_CTR_RANAP_CS_RAB_REL_IMPLICIT] = {
-		"ranap:cs:rab_rel:implicit", "CS RAB Release implicit (during Iu Release)" },
+		"ranap:cs:rab_rel:implicit:normal", "CS RAB Release implicit (during Iu Release), normal" },
+	[HNB_CTR_RANAP_PS_RAB_REL_IMPLICIT_ABNORMAL] = {
+		"ranap:ps:rab_rel:implicit:abnormal", "PS RAB Release implicit (during Iu Release), abnormal" },
+	[HNB_CTR_RANAP_CS_RAB_REL_IMPLICIT_ABNORMAL] = {
+		"ranap:cs:rab_rel:implicit:abnormal", "CS RAB Release implicit (during Iu Release), abnormal" },
 
 	[HNB_CTR_RUA_ERR_IND] = {
 		"rua:error_ind", "Received RUA Error Indications" },
diff --git a/src/osmo-hnbgw/kpi_ranap.c b/src/osmo-hnbgw/kpi_ranap.c
index 76f6e22..c4460ff 100644
--- a/src/osmo-hnbgw/kpi_ranap.c
+++ b/src/osmo-hnbgw/kpi_ranap.c
@@ -36,14 +36,26 @@
 static void kpi_ranap_process_dl_iu_rel_cmd(struct hnbgw_context_map *map, const ranap_message *ranap)
 {
 	struct hnb_persistent *hnbp = map->hnb_ctx->persistent;
+	const RANAP_Cause_t *cause;
 
 	OSMO_ASSERT(ranap->procedureCode == RANAP_ProcedureCode_id_Iu_Release);
 
+	cause = &ranap->msg.iu_ReleaseCommandIEs.cause;
+
 	/* When Iu is released, all RABs are released implicitly */
 	for (unsigned int i = 0; i < ARRAY_SIZE(map->rab_state); i++) {
+		unsigned int ctr_num;
 		switch (map->rab_state[i]) {
 		case RAB_STATE_ACTIVE:
-			HNBP_CTR_INC(hnbp, map->is_ps ? HNB_CTR_RANAP_PS_RAB_REL_IMPLICIT : HNB_CTR_RANAP_CS_RAB_REL_IMPLICIT);
+			if (cause->present == RANAP_Cause_PR_nAS ||
+			    cause->choice.nAS == RANAP_CauseNAS_normal_release) {
+				ctr_num = HNB_CTR_RANAP_PS_RAB_REL_IMPLICIT;
+			} else {
+				ctr_num = HNB_CTR_RANAP_PS_RAB_REL_IMPLICIT_ABNORMAL;
+			}
+			if (!map->is_ps)
+				ctr_num++;
+			HNBP_CTR_INC(hnbp, ctr_num);
 			break;
 		}
 	}
@@ -106,15 +118,12 @@ static void kpi_ranap_process_dl_rab_ass_req(struct hnbgw_context_map *map, rana
 
 	if (ies->presenceMask & RAB_ASSIGNMENTREQUESTIES_RANAP_RAB_RELEASELIST_PRESENT) {
 		RANAP_RAB_ReleaseList_t *r_list = &ies->raB_ReleaseList;
-		/* increment number of released RABs, we don't need to do that individually during iteration */
-		HNBP_CTR_ADD(hnbp, map->is_ps ? HNB_CTR_RANAP_PS_RAB_REL_REQ : HNB_CTR_RANAP_CS_RAB_REL_REQ,
-			     r_list->raB_ReleaseList_ies.list.count);
-
 		for (unsigned int i = 0; i < r_list->raB_ReleaseList_ies.list.count; i++) {
 			RANAP_IE_t *release_list_ie = r_list->raB_ReleaseList_ies.list.array[i];
 			RANAP_RAB_ReleaseItemIEs_t _rab_rel_item_ies = {};
 			RANAP_RAB_ReleaseItemIEs_t *rab_rel_item_ies = &_rab_rel_item_ies;
 			RANAP_RAB_ReleaseItem_t *rab_rel_item;
+			unsigned int ctr_num;
 			uint8_t rab_id;
 
 			if (!release_list_ie)
@@ -133,6 +142,15 @@ static void kpi_ranap_process_dl_rab_ass_req(struct hnbgw_context_map *map, rana
 
 			switch (map->rab_state[rab_id]) {
 			case RAB_STATE_ACTIVE:
+				if (rab_rel_item->cause.present == RANAP_Cause_PR_nAS &&
+				    rab_rel_item->cause.choice.nAS == RANAP_CauseNAS_normal_release) {
+					ctr_num = HNB_CTR_RANAP_PS_RAB_REL_REQ;
+				} else {
+					ctr_num = HNB_CTR_RANAP_PS_RAB_REL_REQ_ABNORMAL;
+				}
+				if (!map->is_ps)
+					ctr_num++;
+				HNBP_CTR_INC(hnbp, ctr_num);
 				break;
 			default:
 				LOG_MAP(map, DRANAP, LOGL_NOTICE,