diff --git a/zp-relayer/workers/sentTxWorker.ts b/zp-relayer/workers/sentTxWorker.ts
index 2025b2f7..57401a32 100644
--- a/zp-relayer/workers/sentTxWorker.ts
+++ b/zp-relayer/workers/sentTxWorker.ts
@@ -69,9 +69,7 @@ export async function createSentTxWorker<T extends EstimationType>(gasPrice: Gas
     }
 
     // Transaction was not mined, but nonce was increased
-    // Should send for re-processing
     if (tx === null) {
-      logger.warn('Transaction was not mined, but nonce increased; tx should be re-processed')
       return [null, true]
     }
 
@@ -89,9 +87,9 @@ export async function createSentTxWorker<T extends EstimationType>(gasPrice: Gas
     const [lastHash, lastGasPrice] = prevAttempts.at(-1) as SendAttempt
 
     if (shouldReprocess) {
-      logger.info('%s sending this job for re-processing...', logPrefix)
-      await poolTxQueue.add('reprocess', [job.data.txPayload])
-      return [SentTxState.SKIPPED, lastHash, []] as SentTxResult
+      // TODO: handle this case later
+      // Error should be caught by `withLoop` to re-run job
+      throw new Error('Ambiguity detected: nonce increased but no respond that transaction was mined')
     }
 
     if (tx) {
@@ -126,6 +124,14 @@ export async function createSentTxWorker<T extends EstimationType>(gasPrice: Gas
           logger.error('Commitments are not equal')
         }
 
+        const rootConfirmed = pool.state.getMerkleRoot()
+        logger.info(`Assert roots are equal`)
+        if (rootConfirmed !== root) {
+          // TODO: Should be impossible but in such case
+          // we should recover from some checkpoint
+          logger.error('Roots are not equal: %s should be %s', rootConfirmed, root)
+        }
+
         return [SentTxState.MINED, txHash, []] as SentTxResult
       } else {
         // Revert