EMBED >More News Videos Harris Co. Sheriff Ed Gonzalez alleges the deputy saw the accident but did not stop.

CYPRESS, Texas (KTRK) -- New information is coming to light about a violent crash that claimed the life of a teen near Cypress over the weekend and left another in critical condition.The wreck happened late Saturday night on Queenslake and Cypress Rosehill in northwest Harris County.At about 10:30 p.m., a Harris County Precinct 4 deputy saw a car driving towards him at a high rate of speed, according to authorities. He turned around and gave chase, but when the car the girls were in flipped over at Queenslake Drive, the deputy allegedly turned off his lights and sirens and drove off.In a news conference, Harris Co. Sheriff Ed Gonzalez alleged the deputy saw the accident but did not stop."From everything we've heard today, it seems the deputy constable was aware of what had occurred," Gonzalez said. "At some point, there's an accident that occurs to a concrete culvert to the right. Deputy approaches the scene, at some point turns off the emergency equipment then proceeds past the accident scene without stopping to take any action."The deputy didn't say anything about the chase until a supervisor found in-car footage of the chase and questioned him about the circumstances regarding the crash, according to a news release from Precinct 4.Precinct 4 brought the dash cam video to the attention of the Harris County Sheriff's Office and asked the HCSO to investigate.No charges have been filed. The case is under investigation by the Harris County District Attorney's Office.However, the sheriff's comments are at odds with the deputy's account as relayed by Constable Mark Herman. Herman said the deputy claimed to have seen the car speeding and started chasing it. He said the deputy then lost the car when he looked down at his computer and didn't realize the car had crashed.Constable Herman said the deputy then proceeded to look for the car but never found it. When discussing the deputy, Herman said that he didn't leave the scene because there was no scene to leave.Harris County Precinct 4 Constable's Office says the deputy has been fired and the victims' families have been notified. Herman said the deputy was fired because he failed to follow policy during the chase. He said his firing was not related to the crash.No charges have been filed. The case is under investigation by the Harris County District Attorney's Office.Gonzalez extended his condolences to the girls' families and pledged to oversee a "complete and thorough investigation."The girls were Cypress Falls High School students.The driver, Jenna Ellsmore, was airlifted to the hospital in critical condition. The passenger, 16-year-old Lily Haugen, died at the scene.Haugen's best friend, Danielle Taylor, said she will be missed."I love her so much. I want her to know how much she means to me."ABC13 also talked to Ellsmore's mother who said she was upset that the deputy did not stop."That was very heartbreaking," said Kathy Ellsmore-Gleason, Jenna Ellsmore's mother.