Hamza Walupupu, 32, was found dead from a gunshot wound to the head in a Crissy Field parking lot in San Francisco on November 12, 2023. Investigators say the shooting occurred after a meeting that night between Walupupu and 20-year-old San Francisco resident Leion (also known as Leniyah) Butler, who identifies as a transgender woman and was working as a sex worker.

Court documents state the pair drove to Crissy Field after agreeing on a transaction. Following an initial sexual act, Butler disclosed her transgender identity; Walupupu then demanded a refund and tried to make Butler leave his car. As he attempted to exit, Butler allegedly retrieved a firearm from her purse and shot him in the head. Authorities say Butler disposed of the body, drove the victim’s car to Hunters Point and enlisted her mother to help wipe down the vehicle and discard evidence. Surveillance footage and cellphone data are reported to have tied Butler to the scene.

Butler was arrested on November 20 after an attempted escape from a second-story window and is charged with second-degree murder, pleading not guilty. She is being held without bail as a danger and a flight risk; her next court date is January 12. If anyone has information about Walupupu or the events that night, please share it with investigators.