A 56-year old motorcyclist is in serious condition after colliding with a car in Hermantown on Friday.

Thomas Avis, of Solon Springs, was driving his motorcycle south on Lavaque Road when he collided with a 2011 Chevrolet Impala driven by a Hermantown man, 80, east on Arrowhead Road, according to the Hermantown Police Department.

Avis was ejected from the motorcycle and was not wearing a helmet. He was taken by Mayo Ambulance to a hospital with "serious, life-threatening injuries," the department said in a news release Tuesday.

As of Tuesday afternoon, Avis was listed in serious condition at Essentia Health-St. Mary's Medical Center in Duluth, an Essentia spokesperson said.

The Hermantown man driving the car did not sustain serious injuries, police said.

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The Hermantown Police Department and Minnesota State Patrol Accident Reconstruction Team are investigating the cause of the crash.