A fire broke out in a nightclub in the southeastern Spanish city of Murcia on Sunday, killing 13 people and injuring several others, authorities said.
The fire started around 6 a.m. in the popular Teatre nightclub and quickly tore through the venue, according to Spain's state news agency EFE.
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It was not immediately clear what caused the fire.
A video shared by Murcia’s fire service showed firefighters trying to control flames inside the nightclub. Police and emergency services worked to secure the interior of the club to avoid a possible collapse and were trying to locate and identify the bodies.
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Officials said the death toll could increase.
The city council declared three days of mourning with flags flown at half-staff on public buildings throughout the region of Murcia.