MOSCOW -- Russian President Vladimir Putin expressed condolences to his Iranian counterpart, Hassan Rouhani, over a deadly terrorist attack and reaffirmed readiness to intensify counterterror cooperation, the Kremlin said Saturday.

"We are outraged by this bloody crime. Hopefully, everyone involved will be held liable," Putin said in his telegram to Rouhani, which was published by the Kremlin.

At least 24 people were killed in a terror attack in a military parade in the southern Iranian Ahvaz city on Saturday, official IRNA news agency reported.

This incident is another proof of the need for "uncompromising war on any manifestations of terrorism," Putin said.

"I would like to confirm our readiness to further enhance cooperation with our Iranian partners in the fight against this evil," he said.

The president offered condolences to the relatives and friends of those killed in the attack and wished a speedy recovery to those injured, according to the Kremlin.