At least six people have been killed and several more were injured after a crash involving approximately 70 vehicles occurred in Mississippi County, Missouri, on Thursday, local officials said. The crash closed both northbound and southbound lanes of Interstate-57, according to the Missouri Highway Patrol. The accident first occurred around 8 a.m, according to the Mississippi County Sheriff’s Office. Officials are currently investigating whether foggy conditions present played a role in the pile up. A photo of the scene in Mississippi County. Mississippi County Sheriff’s Office “We are asking for all unnecessary traffic to still avoid the area at this time to allow emergency personnel through,” the Mississippi County Sheriff’s Office said in a statement. “Our thoughts and prayers are with the families affected by this terrible incident.” It’s not yet clear how many people were injured. At least 13 miles of Interstate-57, between Charleston, Missouri, and the Illinois state line, are currently closed. Patients have been sent to at least three different hospitals in the area, and at least 12 ambulances and 2 air ambulances were called to the scene, the sheriff’s office said.