Police have arrested a suspect in connection with a fatal mass shooting early Sunday morning in Sacramento, California. The shooting, which is the deadliest in the city's history, killed six people and left at least twelve others wounded. The Sacramento Police Department said it arrested 26-year-old Dandre Martin and charged him with assault and illegal firearm possession following an overnight investigation. Police described him as a "related suspect," but did not offer any additional detail about his alleged involvement. Police previously said at least two people opened fire in the downtown district as people streamed out of closing bars. Video...