Investigators spent Wednesday trying to determine what caused a fire that forced all residents of an Edina apartment building to evacuate.

Crews were called to the building on the 6300 block of Barrie Road around 10:30 p.m. and arrived to a heavy fire on the second floor that had extended to two apartments on the third floor directly above, said Edina Fire Chief Andrew Slama.

Firefighters from Edina and seven other agencies fought the three-alarm fire that Slama said appears to have started in a kitchen in an apartment on the second floor. The cause of the fire has not been determined, he said.

Several residents were treated by paramedics on scene for smoke inhalation, but no injuries were reported. No firefighters were hurt, Slama said.

The damage left residents in building's 39 units without a place to live. The Red Cross was working to help those who were displaced, said spokeswoman Lynette Nyman.