At least 20 people trapped as explosion causes building collapse in China

At least 20 people were left trapped after an explosion caused a building to collapse in the southwestern Chinese city of Chongqing.

At least 20 people were trapped after a blast caused a building, housing a government canteen, to collapse in China's Chongqing.

The blast took place at 12:10 pm (0410 GMT) because of a "suspected gas leak" in a canteen and caused a neighbourhood committee building to collapse, trapping people inside, the state-run People's Daily reported.