The Daily Star's FREE newsletter is spectacular! Sign up today for the best stories straight to your inboxAt least three people have been killed and eight left injured after an explosion in Madrid which has rocked the city.The explosion caused the partial collapse of the building, which belongs to the Catholic Church, the city's mayor has said.Mayor Jose Luis Martinez-Almeida said initial information pointed to a gas leak that likely caused the blast in Calle de Toledo, a street leading out from the city centre.He said a body had been discovered under the rubble, but firefighters still have to retrieve the corpse.He added: "The most likely hypothesis is a gas leak, there was a person working on the boiler."Emergency services said eight.
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