Wai Keung Tsang, 43, was shot while working as a part-time unlicensed cab driver on April 11, 2007, in San Francisco’s Sunset District. The shooting occurred about 11:25 PM on Santiago Street near 30th Avenue. After being shot he tried to keep driving but crashed into a home garage at Santiago and 29th Avenue, striking a water heater that started a fire; authorities believe he was already dead when the blaze began.

Police said the circumstances suggested a possible attempted robbery or a dispute with a customer, but Tsang still had money on him when he was found and no witnesses came forward, so the motive remained unclear. Tsang had emigrated from Hong Kong in 1990, worked as a waiter, and had been driving unofficially within a network of unlicensed cab operators for about two years. His brother Peter said he loved driving and Chinese music but faced financial trouble.

The case remains unsolved and the San Francisco Police Department has offered rewards for information leading to an arrest and prosecution. If anyone knew Tsang, his work patterns, or who he was driving that night, please share what you know.