Bangor police said they received a call about an accident at the Hannaford parking lot off Union Street. They said the car involved in the accident then fled the scene.
"Officers then caught up with the vehicle as it was going out, coming in Finson Road, and the vehicle lost control here on Finson Road and subsequently sideswiped the tree in the front of this lawn," Bangor police Lt. Paul Kenison said.
Police said the woman was the only person in the car. Her dog, which was riding with her, was picked up by an animal control officer.
Officials said they were not yet sure if speed was a factor, although witnesses' initial statements suggested she was going fast.
"Saw this maroon SUV -- the back tire was already blown off -- come flying down the Finson Road, and I could tell she was speeding ... lost control," said Samantha Hamel, who witnessed the crash.
Police said the woman was taken to the hospital with injuries that were not considered life-threatening. The incident remains under investigation. It was not immediately clear if the driver will be charged.