SAN FRANCISCO (KRON) -- The San Francisco Police Department is asking for the public's help identifying a suspect in the 2016 killing of 24-year-old Mitchell Warren. Warren was shot around 4:30 a.m. on Sept. 30, 2016, near Polk and Ellis streets in the Tenderloin. Police said officers found him suf fering from a gunshot wound and he later died at San Francisco General Hospital. Investigators obtained surveillance showing a suspect riding on the handlebars of a bicycle after the shooting. Police said the person pedaling the bicycle has already been identified, but they are still trying to identify the person seen on the handlebars. SFPD is now offering a $150,000 reward for information leading to the identification, arrest, and conviction of the person or people responsible for Warren's death. The reward has increased from $75,000 offered by police in 2022. Video and still photos of the suspect can be viewed here. Warren was an electrician's apprentice who grew up mainly in Pacifica and was living in San Francisco at the time of his death. Anyone with information is asked to contact SFPD Homicide Detail at 415-553-1145 or the Department Operations Center at 415-553-1071. Anonymous tips can be made by calling 415-575-4444 or texting TIP411 and beginning the message with “SFPD.” ...read more read less