A St. Michael, N.D., man has been indicted by a federal jury for three counts of involuntary manslaughter and one count of assault resulting in serious bodily injury following a fatal car crash on the Spirit Lake reservation earlier this month.

The indictment alleges that Winter Skye Bigtrack, 18, was driving on Heart Road on Aug. 11 when he left the roadway and rolled. As a result of the rollover, three of the five occupants of the vehicle -- an adult male, a juvenile male and a juvenile female -- died. The fifth passenger, a juvenile female, suffered injuries that required her to be transported to Fargo for intensive care treatment.

Bigtrack suffered a broken collar bone, according to a release from the U.S. Attorney for the District of North Dakota. The occupants of a second vehicle that was involved in the crash received minor injuries.

The indictment alleges that Bigtrack was driving without a license, exceeding the posted speed limit and passing in a no passing zone while under the influence of liquor and a controlled substance.

The case is being investigated by the FBI, the Bureau of Indian Affairs and North Dakota Highway Patrol, according to the release.