The deaths of three people found on a Humboldt County tribal reservation are being investigated as homicides. The Humboldt County Sheriff’s Office says a suspect identified as 18-year-old Mauricio Eduardo Johnson of Loleta has been taken into custody in Utah after a chase by the Utah Highway Patrol. Humboldt County Sheriff’s officials received a report Wednesday morning of victims with serious injuries in a residence on the Bear River Band of the Rohnerville Rancheria Reservation. Tribal police found a male and female dead and a second female with serious injuries who later died at a hospital. Two juveniles were found uninjured. The dead are identified as 40-year-old Nikki Dion Metcalf, 40-year-old Margarett Lee Moon and 16-year-old Shelly Autumn Mae Moon.