A shootout took place between Iranian border guards and armed groups.
Three Iranian servicemen were killed in the incident.
The incident took place near the Iranian city of Sardasht.
No militant group has claimed responsibility for the attack.
A shootout took place between Iranian border guards and armed groups.
Three Iranian servicemen were killed in the incident.
The incident took place near the Iranian city of Sardasht.
No militant group has claimed responsibility for the attack.
