Bartlett police are searching for a missing 36-year-old Bartlett man last seen at a party near West Dundee.
Keith K. Crawford, of the 100 block of Mary Court, left his home about 9 p.m. Saturday, police said.
Authorities believe he was last seen not far from the party near the Fox River Shores Forest Preserve in unincorporated Kane County.
Crawford stands 6 feet 2 inches tall and weighs 230 pounds with a mustache.
He was wearing blue jeans, a tan jacket, black gym shoes and a black baseball hat.
His family reported him missing and told police he has no health issues.
Anyone with information about Crawford's whereabouts should contact the department's Investigations Section at (630) 837-0846.