A suicide bomber targeted an Afghan security forces convoy in Kabul on Tuesday, security officials said.

Casualties were feared but numbers were not immediately available, officials said.

Afghan Interior Ministry spokesman Tariq Arian confirmed it was a suicide attack against Afghan security forces but gave no further details.

The loud blast shook the Afghan capital and plumes of smoke could be seen from distant rooftops, according to Reuters witnesses.

Suicide Bomber Targets Afghan Security Forces Convoy in Kabul: Officials

A suicide bomber targeted an Afghan security forces convoy in Kabul on Tuesday, security officials said.