At least 13 people have been killed in a fire in adjoining nightclubs in Murcia in southeast Spain, emergency services said on Sunday, adding that rescuers were still searching for people unaccounted for after the blaze, reports Reuters

Outside the club, young people hugged, looking shocked as they waited for information after the fire that broke out in the early hours in Atalayas, on the outskirts of the city.

"I think we left 30 seconds to 1 minute before the alarms went off and all the lights went out (and) the screams saying there was a fire," one survivor, who was not identified, said.

"Five family members and two friends are missing."

Diego Seral, of Spain's National Police, told reporters the dead were found in the Fonda nightclub, one of three adjoining clubs, which had sustained the majority of fire damage, including the collapse of its roof, he added.

The collapse was making it difficult to locate victims, and it was difficult to pinpoint yet where exactly the fire started, he said.

The identification of the bodies would take time, he said. The emergency services gave the death toll, which has risen steadily throughout the day, as 13. The cause of the blaze is being investigated.

Earlier, Murcia's Mayor Jose Ballesta told reporters seven bodies had been found in the same area of the first floor, where the fire broke out.

A spokesperson for the Teatre nightclub, Maria Dolores Albellan, told reporters the fire originated in the neighbouring club, La Fonda, before spreading to the two adjoining clubs.

Spanish media reported several birthday celebrations were taking place at the time.

Ballesta declared three days of mourning for those who had died. Flags were lowered to half mast outside Murcia's City Hall.

Footage released by Murcia's fire service showed firefighters working to control flames inside the nightclub. The fire had destroyed part of the roof, the footage showed.

"We are devastated," Ballesta said on Spanish TV channel 24h, adding rescuers were still searching for several people reported missing.

Ballesta told 24h the fire started at around 6 a.m and had now been brought under control. Four people have been treated in hospital for smoke inhalation.

At least 34 people, including two babies were killed when a contraband fuel depot exploded into flames in southern Benin near the border with Nigeria on Saturday.

According to Beninese Interior Minister Alassane Seidou, “a serious fire occurred in the town of Seme Podji. Another 20 people were seriously wounded in the incident.”

"I can't really give you the cause of the fire, but there is a large gasoline warehouse here and cars, tricycles and motorcycles come from morning to evening,” he added.

Nigeria is a main oil and gas producer where fuel smuggling is very common along its borders, particularly when the government maintains a subsidy to keep fuel prices low.

The majority of the victims were burnt and they could not be not be identified.

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