On April 21, the SFPD announced the arrests of Peter Ng and an unnamed juvenile (later identified as the driver of the getaway car, Chester Yu), and named Melvin Yu as another suspect they were seeking in connection with the massacre. Melvin Yu and Peter Cheung were arrested early on the morning of April 23, east of Carson City, Nevada. Tom Yu dropped George Walker as his attorney and surrendered to police after the Memorial Day weekend. In all, nine were arrested and scheduled to be tried for their roles in the massacre: Curtis Tam, Peter Ng, Tom Yu, Melvin Yu, Kam Lee, Chester Yu, Tony Szeto, Peter Cheung, and Donald Wong.