Police initiated a rooftop search near York Minster late last night.
And as part of the investigation, they called in North Yorkshire Fire & Rescue Service at 10.50pm last night (Wednesday).
Officers were trying to locate a thief.
A North Yorkshire Police spokesperson said: “This was a search for a suspected cycle thief who ran off from police officers in the area.
“A search was carried out of buildings and gardens in the St Leonards / Duncombe Place areas and North Yorkshire Fire and Rescue Service assisted with their equipment as officers believed the suspect had climbed onto the roof of a building.
“However, the suspect was not located.”
North Yorkshire Fire Service said a crew from Huntington, and the aerial ladder platform, were sent to help search the roof of a commercial property.
The fire crews also used lighting and a thermal imaging camera.
If you information that could help police with their inquiry, call 101 and quote reference number 12220071285.