Police in San Francisco are asking for the public’s help in identifying a suspect who is wanted for brutally attacking a 39-year-old father of two. San Francisco Police have released surveillance video of the crime and the suspect’s vehicle, and they are asking anyone with any information regarding this crime to contact them as soon as possible.

According to police, the attack occurred just before 11:30 P.M. on September 8th. The victim, Christopher Mathews, was waiting along the sidewalk with his wife, Rebecca Mathews, near First and Howard Street. The couple utilized Lyft’s ride-hailing app to order a car for their date night.

When a white car stopped nearby, the couple thought that it was possibly their Lyft car arriving. Christopher approached the car to ask the driver. He leaned in towards the driver’s window. The video shows only a few seconds passing before a passenger got out of the car, walked over to the victim, and viciously punched him directly in the face. The single blow was so brutal that Christopher immediately fell to his back and slams his head into the pavement. The video ends at this point.

Christopher was rushed to the San Francisco General Hospital where it was revealed he was suffering severe fractures around his head. Bleeding from the victim’s brain and brain stem were life-threatening, and the victim was unconscious. Medical staff kept the victim in intensive care for four days before he eventually woke up. When he did, he could barely remember his wife and children. His traumatic brain injury has resulted in personality changes, memory problems and impaired cognitive functioning.

Anyone with information can anonymously contact San Francisco’s Police Tip Line at 415-575-4444.