Capt. Kyle Whitehead, St. George Police Department, said Jeremy Shawn Olsen, 31, of St. George died at University Medical Center in Las Vegas from injuries he sustained the night of the assault.
Police are still seeking suspect Mario Lucero in connection with the assault.
Anyone with information regarding his location or the incident is asked to call the St. George Police Department at 435-627-4300. Police have said Lucero should be considered armed and extremely dangerous.