The Sedavasima news agency says a car in Sistan and Baluchistan province was the target of an "assassination" ground attack.
According to this report, "this car was carrying contractor engineers who were working" in the Kalgan area of the city of Golshan.
No information has been released about loss of life and injuries to the occupants of the vehicle.
It was reported that the attackers fled the area.
In recent weeks, violence has increased in this district and in several clashes several security forces and members of armed militant groups have been killed.