SAN JOSE -- The man who was fatally struck by a hit-and-run driver following an altercation Sunday at the Capitol Flea Market has been identified by police as 23-year-old Eric Vallejo.

Police are treating Vallejo's death as a homicide and remain tight-lipped about their investigation.

Vallejo died Sunday afternoon when he was struck by a vehicle on Snell Avenue, just south of Capitol Expressway.

San Jose police say a disturbance took place Sunday afternoon between two groups of people at about 3 p.m. inside the flea market. The two groups were ordered by security to leave, and a physical altercation between the two groups ensued just outside the flea market near Snell and Capitol.

At some point, Vallejo was struck by a vehicle in the middle of the street. He died at the scene.

Both groups got into different vehicles and fled the scene before police arrived.

A short time later two men walked into the emergency room at Kaiser Permanente San Jose Medical Center, about five miles away at Santa Teresa Boulevard and Cottle Road. One of the men had been stabbed at least once, and the other man was suffering from injuries consistent with being hit by a vehicle, according to Officer Albert Morales said.

Police say the two men were involved in the altercation that occurred at Snell and Capitol.

The circumstances surrounding the homicide remain under investigation, Morales said.

Anyone with information regarding this case is urged to contact detective Sgt. Guire or Detective Tran of the San Jose Police Department's homicide unit at 408-277-5283. People who wish to remain anonymous can call Silicon Valley Crime Stoppers at 408-947-STOP (7867). Anyone providing information that leads to the arrest and conviction of the suspect may be eligible for a cash reward from Crime Stoppers.