Several miners are missing after an underground earthquake occurred at the Rudna mine in Polkowice in southwestern Poland, TVN24 private broadcaster reported on Tuesday.
Seven people are still underground, according to state broadcaster TVP Info.
An earthquake with a magnitude of 4.5 occurred after 2100 local time (2000 GMT). Several injured people were already transported to the hospital, but rescuers are still searching for other miners underground, according to TVN24.
"There were 16 people in the danger zone. Some of them were walked out," a spokeswoman for the company was quoted as saying by RMF RM private radio.