RANCHO CUCAMONGA -- The fatal shooting here last month near the intersection of Grove Avenue and Ninth Street stemmed from a dispute between rival street gangs in Upland and Rancho Cucamonga, according to a police report.
Jesus Calderon, 50, was shot and killed at about 1 a.m. on Jan. 11 near Calaveras Avenue and Salina Street in Rancho Cucamonga, an area considered home turf by a gang called "Dog Patch."
The accused shooter, 19-year-old Trenton Abel Dukes, is allegedly a member of a rival Upland gang that has an ongoing dispute with "Dog Patch," according to report contained in Duke's court file.
According to a witness who spoke to detectives from the San Bernardino County Sheriff's Department, the two gangs are "on sight," meaning that gang members are expected to attack rivals upon seeing them.
The two gangs feud through Myspace and frequently tag walls in each other's neighborhoods, people familiar with the gangs told sheriff's detectives, according to the report.
Dukes has pleaded not guilty to murdering Calderon, and he remained jailed Friday in lieu of $1 million bail at West Valley Detention Center in Rancho Cucamonga.
He is next due March 8 in West Valley Superior Court.
A man who was with Calderon the morning of his killing said he and Calderon were outside talking on the corner of Calaveras Avenue and Salina Street.
A car with three men inside drove past them slowly before leaving their sight. Calderon and his friend then decided to part for the night, the man told a sheriff's detective.
Calderon got into his car and began to drive away. Soon after, several shots were fired at his car.
Calderon's friend said he saw a man run away from the area and later heard the sound of a car speeding away.
After the shooting, Calderon's horn honked and his car and crashed into a parked truck. His friend told the detective that Calderon was slumped over in the driver's seat.
Witnesses described the car that drove past Calderon and his friend as a newer model silver hatchback. One witness told detectives the car was a Volkswagen Golf.
About 12 hours after the shooting, Upland police saw the car, a 2011 Volkswagen Golf, and arrested its driver, a man who said he was friends with Dukes.
The driver told detectives that Dukes, an alleged member of a gang along Ninth Street called "Ghost Town," bragged about committing a shooting the previous night in "Dog Patch" territory.
The driver said that after he saw a news report that Calderon died in the shooting, he helped Dukes dispose of the murder weapon, a .38-caliber revolver.
He told detectives he and Dukes sold the weapon for $150, and they used some of the proceeds to buy clothes at Wal-Mart.
According to a second police report attached to Dukes' court file, Dukes allegedly stole the Volkswagen Golf at gunpoint on Jan. 8 after pistol-whipping the owner at Bud Bender Park in Rialto.
After the car was recovered and Dukes was identified as Calderon's alleged killer, detectives showed the carjacking victim a photo of Dukes. He identified Dukes as the man who sole his car, according to the police report.