Updated

Afghan police say insurgents have attacked one of their compounds in western Kabul, there are at least two explosions and a gun battle has broken out.

Police officer Mirzal Mohammad says at least one insurgent blew himself up at the entrance to traffic police headquarters just before dawn Monday and a number of others wearing suicide vests entered the building.

An Associated Press reporter at the scene says big explosions have been heard in and around the building and heavy gunfire can be heard.