One policeman and three civilians were killed as a suicide attacker targeted the US forces vehicle in southwest of Kabul city, the interior ministry said in a statement.

A suicide bomber detonated his explosive-loaded near the US soldiers in front of an army recruitment center in Kabul which is said to have more than ten dead and wounded.

Kabul police chief, Ayoub Salangi told Veterans to day reporter Rashidi that the attack left a number of Afghan and foreign soldiers dead and injured but, the exact number is not clear yet .

A witness of the incident says that the Americans sustained more casualties.

Several American soldiers have probably died because their bus was completely torched.