A Two Harbors man died after suffering "substantial injuries" in an ATV rollover on Rossini Road on Sunday evening, according to the St. Louis County Sheriff's Office.

Spencer Sande, 25, hit a washout in a ditch near Pequaywan Lake Road at about 5:40 p.m. and was launched into the air. He was not wearing a helmet at the time of the crash and was the only rider on the vehicle.

First responders from the St. Louis County Rescue Squad, Pequaywan Township, Mayo Clinic Ambulance and North Memorial Air Medical were unable to revive Sande, who was pronounced dead at the scene, according to a news release.

"Alcohol and speed both appear to be factors in the crash, which is under investigation by the St. Louis County Sheriff's Office," according to the release.