Ten members of Iran's law enforcement forces, comprising conscripts and policemen, were killed in the "terrorist" attack in Taftan County on Saturday, the semi-official Fars news agency reported, quoting Iran's police command.
It added the forces were ambushed by "criminal terrorists" as they were returning to their station from a mission to provide security services to citizens in the county, reports Xinhua news agency.
Following the incident, a team consisting of police commanders and officials from the Interior Ministry was formed to investigate the attack.
Jaish al-Zulm, designated as a terrorist entity by Iran, has been involved in many attacks against Iranian security forces and civilians in recent years.