Tourist vanishes after leaving Utah airport to backpack in mountains

The Duchesne County Sheriff's Office is asking for the public's help in locating 29-year-old Onni Llmari Raassina, who was reported missing on March 17.

It is not known who picked him up and dropped him off, officials said. 

Officials added that those were his last known whereabouts.

The sheriff's office released an image of Raassina, along with an image of him at the airport.

He is described as being a 5-foot-8, White male, with blue eyes and short strawberry blonde hair.

Crowley said Raassina's family came to Utah and tried to find him for two weeks.

"I need the public's help immensely. We have a gentleman who's not from our country, the family doesn't even know why he left or anything else," the captain said. "In 30 years of law enforcement, I've never had to deal with a gentleman who flew in from Finland to go hiking up there."

Fox News Digital reached out to the sheriff's office for comment. 

Anyone with information on his whereabouts is urged to contact the sheriff's office at 435-738-1126 or via email: jcrowley@duchesne.utah.gov.