Officers found the San Jose man at about 4 a.m. in the 1700 block of Schulte Drive. He had been stabbed.
Tran was taken to Regional Medical Center in San Jose and pronounced dead a few hours later.
An investigation revealed Tran was stabbed during an altercation between two local rival gangs. Gang-related slogans and hand gestures were exchanged, witnesses told police, during and before the altercation.
Police believe Tran was friends with members of one of the involved gangs. The degree of his involvement remains under investigation.
The investigation also reveled Tran also had been stabbed during a similar gang-related altercation May 1 in the same area as this more recent stabbing took place.
It is unknown whether Tran was targeted. The motive for the altercation remains under investigation.
No arrests have been made. It was the city's 21st homicide this year.
Anyone with information about the incident is asked to call Detective Sgt. Rafael Nieves or Detective Glenn Albin in the San Jose police homicide unit at (408) 277-5283.
Those wishing to remain anonymous can call crime stoppers at (408) 947-STOP (7867) or visit http://svcrimestoppers.org/. Tipsters might be eligible for a reward.