Witnesses: Suicide bomber attacks security in southern Yemen

Witnesses say a suicide bomber has rammed his vehicle into security forces at a building in central Aden in southern Yemen, killing and injuring scores.

Residents heard a large explosion early Tuesday morning as far as several kilometers (miles) away and saw thick black smoke rising from the area.

The attack took place in the Sheikh Othman district in the central part of the city. Ambulances rushed to the site, where debris and body parts littered the area.