By Sharon Bernstein and Andrew Hay (Reuters) -Southern California authorities on Monday identified the suspect in a weekend shooting at a church luncheon as a 68-year-old Las Vegas man, saying he was in custody, charged with murder and attempted murder. The suspect, David Chou, opened fire on Sunday afternoon at Geneva Presbyterian Church in Laguna Woods, a community of mostly elderly residents. One person was killed and five others were wounded, four of them critically, the Orange County Sheriff’s Department said. The shooting occurred during a luncheon honoring the former pastor of a Taiwane…