A 35-year-old miner died in an accident in the Bogdanka coal mine in eastern Poland early on Wednesday, a police spokesperson said.
The police were informed of an accident in a mine owned by Lubelski Wegiel Bogdanka involving four men and one miner had died, while two were hospitalised, a local press officer told Reuters.
The cause of the accident is being investigated, she added.
The company declined to comment on the accident and said it would hold a news conference later in the day.
In April, two mines belonging to state-owned JSW saw fatal accidents over just one week, and Polish Prime Mnister Mateusz Morawiecki promised a safety review of the mines.
(Reporting by Anna Wlodarczak-Semczuk; Editing by Tomasz Janowski)