A Canadian resident is facing a federal charge after allegedly causing an 11,000-acre, $5.5 million wildfire in Montana.

The United States Attorney's Office filed a case Monday in U.S. District Court in Great Falls against Darrel Lynn Swanson for one misdemeanor count of leaving a fire unattended or unextinguished.

Authorities allege Swanson shot off fireworks on Bureau of Land Management lands in the Alder Creek drainage, near Zortman, Montana on July 3, 2017.

Investigating authorities allegedly found evidence of bottle rockets in what was determined to be Swanson's campsite.

Witnesses told investigators that they warned Swanson not to fire off fireworks. Swanson allegedly told investigators that he tried to suppress the fire, but freaked out and left without reporting the incident.

Swanson is set to appear in federal court in Great Falls on July 14.

Read charging documents below: