A teenager injured in Friday’s head-on collision on Route 3 in Augusta is in serious condition at Maine Medical Center in Portland.

Bridget Conlogue, 18, of Windsor, was injured in a three-car crash when an eastbound car, driven by a 16-year-old girl from Mount Desert, crossed the center line, striking the rear of another car before striking Conlogue’s car head-on.

Conlogue had to be cut from her car, according to a press release from Augusta police Lt. Christopher Massey. She was taken to the hospital with serious injuries, he said. The operator of the vehicle struck from behind was not injured.

The 16-year-old, whose name police are not releasing, and Maryita O’Connell, 84, a passenger in her car, were both taken to MaineGeneral Medical Center in Augusta, according to the release.

O’Connell was treated and released on Friday, according to the hospital.

Police are still investigating the cause of the crash.