Southern California authorities have arrested a suspect in connection to a nearly half-century-old murder case. Newport Beach police and Orange County prosecutors said they'll reveal details of their probe of a 1973 slaying during a 10 a.m. press conference on Wednesday. Authorities declined to immediately disclose details of the arrest, but Newport Beach police said last year they were taking a fresh look at the 1973 slaying of 11-year-old Linda O'Keefe. The girl lived in the Corona del Mar neighborhood of Newport Beach and was last seen alive on July 6, 1973, as she walked home from summer school. O'Keefe...