Irshadgul News report,
North Yorkshire Police said Shin Man, 26, was last seen by his family at 1.30am on Saturday when he went out for a ride on a blue full-suspension Apollo mountain bike, which has a black basket on the front.
When he did not return home, his relatives contacted the police.
A spokesman said Allen occasionally rode to Selby and first traveled to Scarborough on the A64 and went on to Leeds.
“Alan is considered vulnerable and concerns are raised for his safety as he does not have access to cash, bank cards or a telephone,” he said.
“He is described as Chinese, 5 feet 3 inches tall, dark hair, full beard – although the only photo the police have of Allen is without a beard – and he was last seen wearing a red hooded top, black trousers and tan Was seen wearing K trainers.
Anyone who has seen a man matching Alan’s description since Saturday or has any information should call 101, option 1, quoting reference number 12220211023.