Gary Allman, aged 37 and from Kent, was staying in a hotel on the Mount while working in York.
Updated: Mr Allman has now been found
He was reported missing by his friend who was staying in the hotel with him after he became concerned for Gary’s safety, having not seeing him since midnight on Wednesday 11 June 2014.
Officers are making enquiries in York in an effort to trace Gary and are urging the public to report any sightings of him.
He is described as white, around 6ft 2in tall, with a medium build, black hair and stubble.
Gary is believed to be wearing beige three-quarter-length combat shorts, a navy blue t-shirt, red Nike trainers, and a grey Kangol Jacket.
Anyone with information that can help to find Gary is urged to contact North Yorkshire Police on 101 – select option 1 – and speak to the Force Control Room.
Please quote reference number NYP-12062014-0068 when passing information about this incident.