diff --git a/src/qibotn/eval.py b/src/qibotn/eval.py
index 9aa0136..d9d93c4 100644
--- a/src/qibotn/eval.py
+++ b/src/qibotn/eval.py
@@ -125,9 +125,6 @@ def dense_vector_tn_MPI(qibo_circ, datatype, n_samples=8):
     # Sum the partial contribution from each process on root.
     result = comm.reduce(sendobj=result, op=MPI.SUM, root=root)
 
-    del network
-    mempool.free_all_blocks()
-
     return result, rank
 
 
@@ -227,9 +224,6 @@ def dense_vector_tn_nccl(qibo_circ, datatype, n_samples=8):
         stream_ptr,
     )
 
-    del network
-    mempool.free_all_blocks()
-
     return result, rank
 
 
@@ -336,9 +330,6 @@ def expectation_pauli_tn_nccl(qibo_circ, datatype, pauli_string_pattern, n_sampl
         stream_ptr,
     )
 
-    del network
-    mempool.free_all_blocks()
-
     return result, rank
 
 
@@ -431,9 +422,6 @@ def expectation_pauli_tn_MPI(qibo_circ, datatype, pauli_string_pattern, n_sample
     # Sum the partial contribution from each process on root.
     result = comm.reduce(sendobj=result, op=MPI.SUM, root=root)
 
-    del network
-    mempool.free_all_blocks()
-
     return result, rank