![building collapse](/index.php/sites/default/files/styles/large/public/2020-12/building%20collapse.jpg?itok=GrsOpH9V)
LISBON, Dec. 20 (Xinhua) -- At least five people were injured, one in serious condition, in an explosion following a fire on Sunday at a building in central Lisbon.
Potential victims buried in the rubble are still being sought, civil protection authorities in the Portuguese capital said.