Officers are appealing for information as to the whereabouts of Antony Foy.
Antony, 69 years-old from Northallerton, was last seen last seen boarding a northbound train at Northallerton Railway Station at 9.30pm on Thursday 5 October 2017.
He has been reported missing from his home address in Northallerton and it’s believed he may have been intending to visit the Darlington area.
Anyone who has seen Antony or who has any information as to where he might be is asked to contact North Yorkshire Police.
Dial 101, press 1 and pass information to the force control room.