From the AP:
BISMARCK, North Dakota — Authorities have blamed smoke from wildfires for a multiple-vehicle pileup on Interstate 29 in northeastern North Dakota that sent eight people to the hospital.
Injuries in the crash Wednesday ranged from minor to critical, the North Dakota Highway Patrol told KFGO radio. Hospital officials told WDAZ-TV early Thursday that seven people were admitted and one has been released.
Seven vehicles were involved in the crash, and two semitrailers collided nearby. It happened close to Manvel while hundreds of firefighters were working to contain multiple grass fires along a 60-mile stretch of the highway, KFGO reported.
“The reduced visibility is what caused the crashes to begin with, and people not slowing down to the conditions of the road,” Highway Patrol Trooper Ryan Mugan told WDAZ.
State transportation officials shut down the interstate from Grand Forks to the Canadian border for a time due to the smoke. The highway reopened Wednesday evening.