A speeding all-terrain vehicle operator crashed and died after dark in north-central Minnesota over the weekend, authorities said Monday.

The wreck occurred about 9:30 p.m. Saturday on the Migizi Bike Trail east of Cass Lake, according to the Cass County Sheriff's Office.

The operator, a 20-year-old man from Cass Lake, lost control while going around a curve in the trail, the Sheriff's Office said. The ATV left the trail and struck a tree.

An ambulance took the man to the Cass Lake Indian Health Services Hospital, where he was declared dead. His identity has not yet been released.

"Speed does appear to be a factor in this crash," a statement from the Sheriff's Office read.