An arson investigation is under way today after a blaze at a disused office in Bradford city centre.

About 50 tyres had been piled against the back door of the building, in Sunbridge Road.

Firefighters from Bradford were called by police at about 11.30pm yesterday. The blaze did not spread inside the building.

A fire service spokesman said people used the area as a place to dump tyres because it was hidden from view.

But he said the tyres had been deliberately piled up.

Police are now investigating.

Anyone with information should call 0845 6060606.