At least 17 people have been injured in a strong explosion that rocked a four-storey building being renovated in central Madrid on Friday on Friday.
Rescue teams were searching for people potentially trapped inside the building in the upmarket district of Salamanca.
Four people were taken to hospital, one in serious condition, Madrid Mayor Jose Luis Martinez-Almeida said, adding that the cause was not yet clear.
“Some kind of works were being done in the building” where the explosion occurred, he said.
“Firefighters are inside checking the building’s structure and to determine whether more people could be inside,” he told Telemadrid TV channel.
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