 Two people are dead and one person is in serious condition after a crash in Big Lake Saturday. A patrol car observed a car speeding that was going north on Highway 25, so turned around to pursue them and came upon the vehicle in the ditch where it had rolled. Two 17-year-old boys were pronounced dead at the scene. A third 17-year-old boy was taken to Hennepin County Medical Center with life-threatening injuries. All three are from Elk River. The names have not been released and the crash remains under investigation.