UPDATE: Gregory Peterson was found deceased in Bigfork Friday night, according to the Minnesota Bureau of Criminal Apprehension.

MINNEAPOLIS (WCCO) – Authorities in northern Minnesota say they are concerned for the welfare of a missing man.

According to the Itasca County Sheriff's Office, 57-year-old Gregory Peterson was last seen at his house in Effie around 9 a.m. Thursday. Authorities said he has serious health issues.

Peterson was driving a 1999 green Dodge Ram 1500 pickup truck with the license plate 592MBA. He was last seen wearing a green Carhartt jacket, black Muck boots and blue jeans, the sheriff's office said. He is 5-feet-8-inches tall, 190 pounds, with brown hair and blue eyes.

Anyone with information about Peterson is asked to call the Itasca County Sheriff's Office at 218-326-3477 or call 911.