Arrests made in Montebello killing Posted on October 25, 2008 by Brian Day MONTEBELLO — Two men were arrested Saturday on suspicion of killing another man in what police believe was a gang-related shooting, authorities said. Edward Joseph De la Rosa, 22, of Montebello (left) and Andrew Simon Valdez, 20, (right) also of Montebello were booked on suspicion of murder, Montebello police said in a written statement. The victim’s name was not released Saturday as officials had not yet notified a next of kin, coroner’s officials said. Police estimated him to be in his 20s. The man died at Los Angeles County-USC Medical Center shortly after the shooting, which occurred about 11:30 p.m. Friday in the 200 block of N. 6th Street, officials said. The suspects and victim are believed to be affiliated with street gangs, police said. Authorities would not release the names of those gangs.