A man flagged down a Los Angeles County sheriff’s deputy and confessed to killing a man near downtown Las Vegas in 2013, police say. Police say 32-year-old Eric Jesus Martinez gave up details of the stabbing that “would only be known to the suspect.” The victim, Ronald Gray, was found on a sidewalk with more than 100 stab wounds in front of the Salvation Army. Martinez said “the voices in his head told him to kill him,” according to an arrest report. It remains unclear why Martinez turned himself in. He’s being held at the Clark County Detention Center without bail.