Casualties feared in Kabul attack (video)
( BBC ) - A suicide bomber has blown himself up near a bus carrying policemen in the Afghan capital, Kabul, the police says.
The number of casualties in the attack which took place early on Tuesday is unclear, a senior police official said.
On Saturday, a powerful suicide bomb attack on a bus in Kabul killed at least 27 Afghan soldiers.
The Taleban claimed the attack. More than 3,000 people have been killed this year as Afghan and foreign forces battle Taleban fighters.