Child killed as 4-storey block in Paris collapses

A four-storey residential building collapsed on Sunday morning in a Paris suburb following an explosion, killing at least one child and injuring 11, local emergency services said.

A dozen people -- seven adults and five children -- are still unaccounted for, said a spokesman for the French capital's firefighter service.

It is not yet known what triggered the explosion, the spokesman said.

"The search is ongoing for other possible victims in the rubble, and an alert for the mobilisation of significant medical resources has been made."