At least 40 people have been killed in a suicide bomb attack during a rehearsal for a military parade in the Yemeni capital, Sanaa, officials say.
The assailant, who was reportedly wearing army uniform, blew himself up among a group of soldiers at al-Sabin Square, near the presidential palace.
One unconfirmed report said as many as 96 people might have been killed.
It was the deadliest attack in the capital since President Abdrabbuh Mansour Hadi took power in February.
Witnesses said remains of the victims were scattered across the square, where large military parades are often held. Ambulances rushed to the area to take the dozens of wounded to hospital.