An 81-year-old Petaluma woman was injured Saturday morning after she was struck when a suspected drunken driver hit another car.

Around 8:10 a.m., police officers were called to the area near B Street and Pearce Street in Petaluma in response to a vehicle collision. A vehicle driven by Monique Grace Tremblay, 32, struck a parked car, forcing both cars partially onto the sidewalk and striking the pedestrian, according to the Petaluma Police Department.

Tremblay displayed signs of intoxication and admitted to drinking the previous night, police said. Officers said they also found a small amount of a substance believed to be cocaine in her car. Tremblay was arrested on a suspected DUI, causing injury, and possession of a controlled substance.

The pedestrian sustained major injuries and was transported to Memorial Hospital in Santa Rosa.

Tremblay sustained minor injuries and was taken to Petaluma Valley Hospital before being booked into Sonoma County Jail.