Jose Guadalupe Diaz, 35

Jose Guadalupe Diaz, a 35-year-old Latino, was fatally stabbed Tuesday, May 3, in the 4100 block of East Valley Boulevard in Boyle Heights, according to Los Angeles County coroner’s records.

About 11:15 a.m., Diaz stopped his black Honda Civic on East Valley Boulevard and got out of the car, said LAPD Det. Jose Ramirez. He was involved in an argument with a man on a bicycle, then got back into his car. The man approached with a knife in his hand and stabbed Diaz in the chest through the driver’s side door, Ramirez said.

The assailant fled on the bicycle, Ramirez said.

Diaz was taken to a hospital, where he was pronounced dead at 11:40 a.m., according to coroner’s records.

Manuel Castaneda, a 31-year-old Latino, was arrested on suspicion of murder later that night, Ramirez said. Castaneda was spotted about a block away from the stabbing, and officers recognized his bike, which had different colored back and front tires.

Castaneda was charged May 5 with one count of murder, according to online court records. He is due back in court May 19.

Police are still trying to determine what led to the stabbing.Anyone with information is asked to call Hollenbeck detectives at (323) 342-8964. Those who wish to remain anonymous can call Crime Stoppers at (800) 222-8477.

Contact the Homicide Report. Follow @nicolesantacruz and @latimeshomicide on Twitter.