A resident spotted 52-year-old Dauderman after seeing the sheriff's office's posts, and alerted authorities.
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Original story follows.
Madera County sheriff's officials are asking for the public's help finding an at-risk missing 52-year-old man.
Authorities say Joseph Dauderman left his Madera Ranchos home around 5:30 a.m. on Wednesday and did not return. He was riding a dark-colored bicycle with orange wheels and was wearing a black helmet.
Dauderman is 6'1" and weighs around 180 pounds. He has brown eyes.
Dauderman has Down Syndrome, and is considered at-risk. Anyone with information is asked to call the Madera County Sheriff's Office.