diff --git a/.changeset/neat-turkeys-cry.md b/.changeset/neat-turkeys-cry.md
new file mode 100644
index 0000000..79fc94f
--- /dev/null
+++ b/.changeset/neat-turkeys-cry.md
@@ -0,0 +1,5 @@
+---
+'@rosen-chains/abstract-chain': patch
+---
+
+Rethrow any unexpected errors while verifying events
diff --git a/packages/abstract-chain/lib/AbstractChain.ts b/packages/abstract-chain/lib/AbstractChain.ts
index 140cd9a..c1e39dd 100644
--- a/packages/abstract-chain/lib/AbstractChain.ts
+++ b/packages/abstract-chain/lib/AbstractChain.ts
@@ -253,15 +253,8 @@ abstract class AbstractChain<TxType> {
           `Event [${eventId}] is not valid, lock tx [${event.sourceTxId}] is not available in network`
         );
         return false;
-      } else if (
-        e instanceof FailedError ||
-        e instanceof NetworkError ||
-        e instanceof UnexpectedApiError
-      ) {
-        throw Error(`Skipping event [${eventId}] validation: ${e}`);
       } else {
-        this.logger.warn(`Event [${eventId}] validation failed: ${e}`);
-        return false;
+        throw Error(`Skipping event [${eventId}] validation: ${e}`);
       }
     }
   };