ARSONISTS are believed to have started a fire which has caused tens of thousands of pounds of damage to a West Yorkshire business.

An office, lorries, JCBs and forklift trucks were damaged in the fire at Hillroyd Stone Sales, in the West Bowling area of Bradford.

Four fire crews were called to put out the blaze in the early hours of yesterday.

The cause of the blaze is being investigated by fire officers and police. It is thought to be suspicious.