Police said Thomas Richardson, missing after flying from London to O'Hare Airport, is 5-foot-9, weighs 210 pounds and has gray hair and brown eyes. View Full Caption Chicago Police Department

CHICAGO — A 69-year-old man who recently had been having memory problems went missing after he flew from London to O'Hare on Friday and never boarded his connecting flight, police said.

Thomas Richardson flew into O'Hare Airport from London and was supposed to get on a connecting flight to California, but police said that he never boarded the plane and hasn't been in touch with family members.

He has been forgetful recently and has been lost before, police said.

Richardson is 5-foot-9, weighs 210 pounds and has gray hair and brown eyes, according to police.

He was last seen wearing a brown/caramel-colored suit, a beige shirt with a pinstripe diamond pattern, black leather shoes and navy quilted jacket, police said. He has a slight bump on his forehead, according to police.

Cops asked anyone with information to call detectives at 312-744-8200.