NEKROOSA, Wis. (CBS 58) -- A silver alert was issued for Dale Mark Larson, 65, of Nekoosa in Adams County around 2 a.m. Saturday, Aug. 29.

According to officials, Larson has dementia. He went for a bike ride at 4 p.m. Friday and never returned home. He was last seen in the 1400 block of Rapids Trail. 

Officials say Larson was wearing black biking shorts, a bright yellow Under Armour shirt, and tennis shoes. 

Officials say he is an experienced biker and can ride long distances.

Larson is diabetic and insulin dependent.

Larson rides a silver Trek bicycle.

If you have any leads or information, contact the Town of Rome Police Department at 608-339-3304.