Medford police are trying to figure out why a 79-year-old woman was stabbed in west Medford Monday night.

The woman, who was found alone inside a residence in the 300 block of West Jackson Street, is hospitalized in critical but stable condition, according to Medford police Lt. Kerry Curtis.

"We're not sure the reason why the assault happened," Curtis said.

Police and first responders arrived at 9:15 p.m. Monday and treated the woman for three stab wounds to the torso before transporting her to a local hospital.

Curtis said the victim has been conscious and police have spoken with her, but they're seeking witnesses.

The woman wasn't attacked in her home, but was inside a "residence she's familiar with," Curtis said.

“We’re trying to locate people that we believe may be involved or may be witnesses,” Curtis said.

Multiple people lived at the residence where the woman was attacked, and investigators are working to determine who was there at the time of the stabbing, Curtis said. It's unclear whether she was attacked by a resident, a guest or a stranger.

Anyone with information about the attack is asked to contact police, Curtis said.

"Trying to determine who had what involvement is part of the pieces we're trying to put together right now," Curtis said.

— Reach reporter Nick Morgan at 541-776-4471 or nmorgan@mailtribune.com. Follow him on Twitter at @MTCrimeBeat.