The man accused of gunning down a Selma police officer was identified Wednesday by the Fresno County Sheriff’s Office as Nathaniel Dixon. The 23-year-old was arrested within a half hour of allegedly killing officer Gonzalo Carrasco Jr., a two-year veteran of Selma Police Department, police have said. Officers recovered a weapon not far from where Dixon was arrested, police said. Carrasco was flagged down by a resident who said a suspicious man was in front of a home on Pine Street, which is south of Rose Avenue and west of Highway 99, the sheriff’s office said in a Wednesday update....