Gunmen have attacked a television station in the Afghan capital Kabul, killing at least one person.

Three attackers stormed the Shamshad TV building after detonating explosives, police say.

A guard and one of the attackers are said to have been killed and a security operation is under way.

The exact number of casualties is not yet clear. So-called Islamic State said they were behind the attack, in a statement made on its news outlet Amaq.

A BBC reporter in the area could still hear the sound of gunfire with the remaining attackers reported to still be resisting.