A suicide bomber has blown up a bus carrying Afghan soldiers in Kabul, killing at least 27 military personnel and injuring many others.
Several passers-by were also believed to have been killed in the blast near the city centre.
The explosion blew out the roof and sides of the large bus, which was reduced to mangled metal.
The suicide attacker, who had been wearing an army uniform, detonated explosives strapped to his body as he approached the bus.
The vehicle was attacked in a residential suburb just north-west of the city centre. It had been taking soldiers and officers to work at the defence ministry.
The insurgent Taliban movement, behind a wave of suicide attacks in Afghanistan this year, claimed responsibility.
