Ten people died in a fire at a Romanian hospital treating coronavirus patients, the country’s agency for emergency situations (ISU) said.

The blaze broke out in the intensive care unit of the Piatra Neamt county hospital and spread to an adjoining room. It was unclear what triggered it, officials said.

Seven other people were injured and in critical condition, including the doctor on call, they said.

Prosecutors said they would investigate the cause of the fire.