At least 13 people have been killed by an air strike on a wedding convoy in southern Yemen, say officials.
The attack happened near the town of Radda in al-Bayda province, a known stronghold of al-Qaeda.
It was unclear what aircraft carried out the attack, though local people said it was a drone.
The US has acknowledged using drones as part of its support for Yemen's efforts to tackle militant extremists, but does not comment on individual strikes.
Human rights groups say US drone attacks in Yemen constitute unlawful killings.
Despite the counter-operations, al-Qaeda in the Arabian Peninsula (AQAP) remains active in Yemen.
Last week it said it had carried out an attack on Yemen's defence ministry in the capital, Sanaa, because the unmanned aircraft were being operated from there
That attack left at least 52 people dead, including soldiers, civilians and foreigners.
It was the deadliest attack in Sanaa since May 2012, when a suicide bomber blew himself up during a rehearsal for a military parade.