At least six people were killed and 26 others injured on Sunday in the bomb attack on the bus carrying members of Yemen's air force to their base in Sana'a.
The bus was travelling on the road leading to Sana'a international airport, near the base, an official said.
Ameen Saree, an air force officer who rushed to the scene, said a bomb had been planted in the vehicle.
Air force spokesman Colonel Mahdi al-Aidarous said about 24 officers and soldiers were on the bus.
Earlier this month, suspected al-Qaeda militants killed five soldiers in an attack on a gas terminal in southern Yemen.
NTJ/SHI