An explosion at a chemical factory Thursday in the Czech Republic killed six people and injured two others, officials said.
Unipetrol, a Czech oil processor and plastics producer, said the explosion happened inside one of the storage tanks for fuels and additives in its refinery in the town of Kralupy nad Vltavou, 10 miles north of Prague. It was not immediately clear what caused the blast.
A Kralupy town crisis manager said the explosion appeared to happen when workers were cleaning an empty tank.
Regional firefighters confirmed that six people were killed and that the two injured were sent to the hospital. Spokesman Petr Svoboda said there was no danger of further explosions at the site. Acting Prime Minister Andrej Babis expressed his condolences to the relatives.