Los Angeles police have arrested a man in connection with the gruesome killing of a homeless man who was set on fire last year. The arrest caps a nearly four-month search for suspects in a killing that outraged the city. Benjamin Mathew Martin, 30, was apprehended in Rancho Mirage today, said LAPD Deputy Chief Charlie Beck. Martin's alleged motivation for the killing, Beck said, appears to be "straight-up personal dislike and a little bit of crazy." Authorities said they tied Martin to the murder through witnesses and forensic evidence collected at the crime scene. Beck declined to provide details about...