WARSAW, Poland (AP) — Rescuers found four bodies in the debris of a house destroyed by a gas explosion in southern Poland and were searching in sub-freezing weather early today for four people still missing, officials said.

Silesia provincial Gov. Jaroslaw Wieczorek said the bodies of four people, including a child, were found and rescuers continued to comb by hand through the debris in search of those missing. The temperature is sub-freezing and there is some snow in the southern mountain resort of Szczyrk where the explosion occurred.

Earlier firefighters said that nine members of two families lived in the three-story house. One person was not at home at the time of the explosion Wednesday evening.

Head of regional firefighters, Jacek Kleszczewski, said about a half of the debris had been checked and the action now focused on cutting through the collapsed ceiling structures.

A suspected cause was a gas leak during work on a pipeline.

Prosecutors were on the site and are investigating.