International

Romania's government declared a three-day national mourning on Saturday, after an overnight fire in a Bucharest nightclub killed 27 people and injured 184 during a rock concert that featured fireworks used indoors.

In one of the capital's worst disasters in decades, up to 500 people, mostly young adults, stampeded for the only available exit as the club in the basement of a Communist-era sport-shoe factory filled with smoke.

Officials and witnesses said fireworks were used inside the club, while Colectiv Club's Facebook page advertised pyrotechnic effects at the show.

Deputy Interior Minister Raed Arafat said 17 of the 27 dead had yet to be identified and 146 people remained in hospital. He said no fire permit was requested by the club nor granted to them by the Bucharest firefighting department.

"Unfortunately, the death toll may change taking into account the severity of their injuries," Arafat said after an emergency meeting early on Saturday.

President Klaus Iohannis toured Bucharest hospitals to visit the victims and also lit a candle at the club, while some 600 people queued to donate blood.

"I've got strong clues the law was broken in this case. I'm revolted that such a tragedy happens in downtown of the capital and innocent youngsters are perished," Iohannis said.

A pillar covered with foam panels and the club's ceiling went up in flames, followed by an explosion and heavy smoke, the witnesses said. Many people admitted to 12 hospitals had suffered burn, smoke inhalation injuries or were trampled.

TV footage showed police officers and paramedics trying to resuscitate young people lying on the pavement while sirens wailed with more ambulances deployed to the scene.

Prime Minister Victor Ponta, just back from an official visit to Mexico, ordered checks on clubs across the country to see whether safety and firefighting norms are being observed.

"There was a stampede of people running out of the (Colectiv) club," a man who escaped without shoes told Reuters.