PHOENIX – A Silver Alert was issued early Wednesday for a missing West Valley man who has cognitive problems, authorities said.

Peter Aynesworth, 75, was last seen Tuesday around 9:30 p.m. driving near 91st Avenue and Edgewater Road, the Peoria Police Department said.

Family members told police Aynesworth has Alzheimer’s disease and that he becomes confused and gets lost easily.

He stands 5 feet, 11 inches tall and weighs 111 pounds and has blond hair and hazel eyes. He was wearing a long-sleeved blue and white striped shirt and black jeans.

Aynesworth was driving a silver 2005 Mercedes Benz C Class bearing Arizona license plate CLH5379.

He left without his medication or cellphone, police said.

Anyone with information as to Aynesworth’s whereabouts should call Peoria police at 623-773-8311.