The militants have fired small arms and grenade launchers on the Maryinka checkpoint in the Donetsk region, the Ukrainian State Border Service said on Friday.

The attack on the Maryinka checkpoint lasted for more than three hours on Thursday, the service said. The fire started at about 8:30 p.m. after the checkpoint had closed for the night. "The fire was coming from a belt of trees on the outskirts of Oleksandrivka. They fired small arms at first and used AGS-17 and RPG grenade launchers later," the service said.

No Ukrainian servicemen were hurt, it said.

Two attacks were observed in the same area several days ago, the report says.