EAU CLAIRE, Wis. (WFRV) – Authorities in Wisconsin are searching for 16-year-old Colin T. Robaidek, who was last seen on Wednesday after leaving a note to family stating his intentions to leave his residence voluntarily.

According to the Eau Claire Police Department, on April 17, Robaidek’s parents contacted police after the 16-year-old had not gone to school or returned home.

During the investigation, it was discovered that Robaidek left a note stating his intention to leave home voluntarily. His parents say this behavior is uncharacteristic, and they are also concerned about recent statements he made about the stress he was experiencing.

Robaidek was seen on video surveillance leaving his residence in the 2200 block of Windsong Court alone on his bicycle shortly before 1:00 p.m. on Wednesday.

Additionally, he was seen on business security cameras on American Boulevard heading east. Since then, Robaidek has not been in contact with family or friends.

Authorities describe Robaidek as 6’1″ and 190 pounds. He has blonde hair and blue eyes. He was last seen wearing a black sweatshirt and sweatpants, carrying a black North Face backpack, and riding a dark gray Trek bicycle.

As a part of this investigation, the Eau Claire Police Department has utilized many avenues to bring Colin home safely. These include interviews of friends and family, repeated phone pings, searches of social media accounts, reviewing business security surveillance video, drone searches with thermal imaging, and public assistance messaging.

After a review of public safety cameras, Colin Robaidek was seen on April 17 using the bike trail to travel through Eau Claire. The area where he was last observed on camera was on the Chippewa River State Bike Trail along North Hastings Way near Hogarth Street. He was riding alone north toward the Village of Lake Hallie.

Wings of Hope has assisted in advanced searches of Eau Claire County bike trails, wooded areas, and waters. The Federal Bureau of Investigation (FBI), Eau Claire County Sheriff’s Office, Altoona Police Department, Wisconsin State Patrol, Northstar Search and Rescue, and the Eau Claire Area School District are also assisting in these efforts.

Police say additional efforts will include canine tracking with assistance from Northstar Search and Rescue, aerial observation from a Wisconsin State Patrol air unit, continued drone searches, and further review of social media accounts.

“We are aware of numerous residents and neighborhood associations offering assistance with search efforts,” said the Eau Claire Police Department. “We are thankful for public support. At this time, there is no specific geographic area to focus on, so we ask all community members to be vigilant and report information.”

The Eau Claire Police Department continued to say that residents can help by reviewing home security videos. Additionally, residents are asked to respect others’ private property if they organize a search party in their neighborhoods. Never search alone; carry a phone; be cautious when conducting searches, as safety is critical.

Anyone with information on Robaidek’s whereabouts is encouraged to contact the Eau Claire Police Department at (715) 839-4972. No additional details were provided.

Local 5 News will continue to follow this incident as it progresses.