Afghan police men take up positions as they arrive near the site of suicide bombing in Kabul, Afghanistan. –Photo by AP

KABUL: An explosion rocked a Kabul district that is home to the headquarters of the Nato-led International Security Assistance Force and near the presidential palace and many embassies, a police source said on Tuesday. 

“The explosion was in Shashdarak district. We don’t know whether it was a bomb,” the source told Reuters. He asked not to be named as he is not authorised to talk to the media. 

ISAF said they were not immediately aware of any explosion.