The Taliban has stepped up attacks on government and foreign targets in Afghanistan

A vehicle carrying employees of popular Afghan TV channel TOLO was the target of a deadly bombing in downtown Kabul Wednesday, officials and sources within the media organisation told AFP.

"Our office bus taking TOLO staff home came under attack," a reporter at the channel told AFP, requesting anonymity. 

Kabul police chief Abdul Rahman Rahimi said the attack left seven people dead and 25 others wounded.