A Portland woman was killed Saturday when the sport utility vehicle she was riding in was hit by another SUV in the Penobscot County town of Enfield.

Troy Morton, chief deputy for the Penobscot County Sheriff’s Office, identified the victim Monday as Karla Kenniston, 64, of Portland. Kenniston was pronounced dead at the scene.

Morton said in a press release that six other people were injured in the crash, which occurred around 11:30 a.m. Saturday on Route 2, near its intersection with Mohawk Road.

Their injuries varied widely. The only one with life-threatening injuries was Jonathan Noonan, 48, of Sebois. Noonan was flown by LifeFlight helicopter to Eastern Maine Medical Center in Bangor, where he was listed in critical condition Monday night.

Noonan was a passenger in a black Saturn SUV driven by Katie Martin, 29, of Howland. Morton said Martin’s vehicle crossed the center line and hit a Toyota Highlander driven by Kathi Hinkelman-Emery, 60, of Lincoln.

Martin was taken to Eastern Maine Medical Center, where she was treated and released. A 7-year-old boy in her vehicle was taken to the hospital for observation, but was not injured, Morton said.

Morton said Kenniston was riding in a rear passenger seat of the Highlander, wearing a seat belt, when the collision occurred. Both vehicles were destroyed. The cause of the crash remains under investigation.