A 20-year-old man was found with fatal stab wounds in India Basin Shoreline Park early Wednesday, police said.
Neighbors called 911 after hearing the man screaming near Innes Avenue and Arelious Walker about 1:45 a.m.
The victim, who has not yet been identified, was transported to San Francisco General Hospital, where he died, Shyy said.
Police have been canvassing the area for clues and witnesses. No one is in custody, Shyy said.