Shortly after 11 a.m. Friday, the Elkhart Police Department and Elkhart Fire Department were dispatched to South Main Street and Capitol Boulevard for a car accident.
Emergency crews were advised of multiple injuries and that one of the vehicles was on fire.
At this point in the investigation, police believe a silver minivan was traveling northbound on South Main Street at a high rate of speed.
That minivan struck a second vehicle, a piece of construction equipment, and then finally a dump truck, which caused a diesel fuel leak.
The minivan then caught on fire.
At least one motorist stopped and helped with getting the passengers out of the vehicle.
Four passengers were transported to Elkhart General Hospital with non-life threatening injuries. Two others were transported to Memorial Hospital of South Bend and are in critical condition.
The roads immediately surrounding the intersection of South Main Street and Capitol Boulevard were closed as of 1 p.m. and will remain closed for the next several hours. The Elkhart Police Departments asks for motorists to avoid the area.