A city guard, left, and a rescuer walk with a little dog saved from the rubble of an apartment bloc that has collapsed killing several people in the western city of Poznan, Poland, Monday, March 5, 2018. Courtesy of INSTAGRAM/ @PAWEL_ALTERNATYWNA /via REUTERS

WARSAW (Reuters) - Four people died and about 20 were injured in an apartment building collapse in Poznan, western Poland, most likely to have been caused by a gas explosion, state-run news agency PAP said on Sunday. A spokesman for the local firefighters, Slawomir Brandt, said 24 teams of firefighters were working in the rubble after the collapse Sunday of a building that contained 18 apartments. Regional governor Zbigniew Hoffman said it was too early to determine the cause of the collapse but added that a gas explosion was one possible explanation. “It was provisionally determined that it could have been a gas explosion,” the firefighters’ spokesman told TVN24 television.
An explosion followed by a building collapse kills four and injures 20 in Poznan, Poland.