An unidentified man was shot and killed last night in the northeast Valley. Metro Police say the victim suffered multiple gunshot wounds and was found wounded around 7:30 p.m. near Lake Mead and Nellis Boulevards. He later died at University Medical Center. No arrests have been made. It was the third shooting this week in northwest Vegas. On Tuesday night, a man was shot and killed by a Metro Police sergeant at a bar in the same area. And earlier that evening, a man was shot in the back while taking out the trash at a home near Lake Mead and Lamb Boulevards.