According to a report from Maine Public Broadcasting, a three-alarm fire killed five near the University of Southern Maine campus Saturday morning. A sixth person remains in critical condition. This person reportedly jumped from the second floor of the house.

“On behalf of the mayor and the council, I’d like to express our deepest sympathy. This is an enormous tragedy for our community,” Fire Chief Jerome LaMoria said at a press conference Saturday.

WNYT reports that seven people were able to escape from the house in Portland, Maine.

State Police Spokesman Stephen McCausland believes, according to MPBN, that most of the house’s residents were probably sleeping when the fire broke out. He noted Sunday that none of the five victims attend the University of Southern Maine.

Fire investigators have not identified any of the victims. Police say that the investigation into the cause or causes of the fire could take several weeks.