NORTHRIDGE – A young Pacoima woman fleeing her ex-girlfriend in a 100 mph SUV chase was killed early Saturday when she sped through a red light and crashed into a Metro bus and two other vehicles, police said. The crash, which critically injured a firefighter on his way to work, occurred after 22-year-old Shayla Phillips frantically dialled 911 from her Lexus SUV, seeking help from police. “She called and reported she was being chased by a former girlfriend of hers,” Detective Joel R. Price said. At Reseda and Roscoe boulevards just after 6 a.m., Phillips’ speeding Lexus SUV drove through a red light and slammed into the side of a pickup truck driven by the firefighter, who was heading to work at Station 73 eight blocks away. Police are still looking for a second woman who Phillips said was riding in the vehicle chasing her, Price said. The Lexus’ rear window was shattered by a bottle thrown by the pursuer, Price said. Detectives are investigating whether the pursuer’s SUV hit Phillips’ vehicle during the chase. The TrailBlazer shows recent damage, Price said. The 17-year-old girl was booked on suspicion of murder. She was expected to be taken to Sylmar Juvenile Hall, police said. She was not identified because of her age. Price said police do not know what precipitated the chase. Phillips’ partner told police Phillips had left that morning on her way to work. The firefighter’s name was not immediately released at the request of his family, officials said. Married and with three children, he was taken into adjacent Northridge Hospital Medical Center, where he had surgery but remained in critical condition late Saturday. The bus driver and at least two passengers, who authorities said suffered minor injuries, were also taken to the Northridge Hospital. The Saab’s driver was taken to Northridge with what officials said were non-life-threatening injuries. About 50 of the firefighter’s fellow firefighters were at the hospital, Wilson said, and a department psychologist was debriefing the ones who worked the crash scene. At the crash scene, the front windows of the bus were smashed, and glass and debris, including a bicycle and a child’s stuffed toy, were strewn about the scene. Price said all of the drivers were wearing seat belts. [email protected] (818) 713-3663160Want local news?Sign up for the Localist and stay informed Something went wrong. Please try again.subscribeCongratulations! You’re all set! AD Quality Auto 360p 720p 1080p Top articles1/5READ MORE11 theater productions to see in Southern California this week, Dec. 27-Jan. 2The SUV and truck slid across the intersection and hit the stopped bus and a Saab sedan. The impact flipped the firefighter’s truck upside down and tore out its engine. Firefighters from his station were the first to reach the wreckage. “It was a horrendous crash,” Los Angeles Fire Capt. Tim Wilson said. “(The truck) was starting to smoke, and he was hanging upside down, held in with his seat belt, and they had to cut the seat belt and get him out. They said, `Oh my God … it’s the engineer who drives the firetruck,’ and then they didn’t have time to think, they had to get him out; they saw how critical he was.” Phillips was pronounced dead at the scene. The Chevrolet TrailBlazer that had chased her fled after the crash, Price said. Police arrested the former girlfriend, a 17-year-old South Los Angeles girl, when she arrived at her home Saturday afternoon, he said.