At least two people were killed and six wounded on Wednesday in another suicide bombing targeting police in Syria’s capital Damascus.

Three attackers blew themselves up outside the police command centre after clashing with guards, according to Syrian State media.

“Our investigations are ongoing to find out where they came from and how,” Damascus police chief Mohammad Kheir Ismail said. “The issue has been controlled.”

He said two attackers detonated their explosive belts in front of the building, killing two policemen. A third tried to flee the area but was trapped near a clothes market, where he set off his explosives.

The Islamic State outlet Amaq reported the bombing without claiming responsibility, but on the Telegram messaging application, ISIS said three of its fighters carried out the attack.

The Islamic State also claimed a double bombing on October 2 of a police station in Midan in southern Damascus, killing at least 10 people.