The cellphone of one of two University of Southern California graduate students killed last month helped lead police to their alleged killers, the Los Angeles Times reports. Sources said a suspect arrested Friday took a cellphone from one of the victims and detectives were able to locate him by tracking signals sent by the device. Authorities also identified a signal from a second cellphone in proximity to the victim’s phone. The second phone was identified as belonging to the suspect.
Los Angeles Police Chief Charlie Beck said the suspects did not have extensive criminal records but were believed to have been involved in two earlier attempted slayings. “Early on, forensic evidence made us suspect quite strongly that this was a part of a series of crimes committed by the same men,” the chief said.