Authorities say a gas pipeline has exploded in a village in western Poland, injuring 10 people and leaving two missing.

Spokesman for Poznan region authorities Tomasz Stube said the explosion Thursday afternoon set fire to houses in the village of Jankow Przygodzki. He said 10 people were hospitalized, one in critical condition.

Malgorzata Polkowska, a spokeswoman for Poland's pipeline operator Gaz-System S.A., said two people were missing. She did not immediately know what caused the explosion.

A pipeline carrying Russian gas to western Europe runs through Poland. It was not immediately known whether the explosion occurred on a major or a local pipeline.