AN investigation is underway into a suspected arson attack at an outbuilding in Accrington.

The fire happened at the rear of an empty house in Edleston Street at around 11.45pm last night.

Two crews attended to extinguish the blaze and an investigation is now being carried out alongside the police.

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A fire service spokesman said: "The outbuilding has suffered extensive fire damage during the incident.

"The fire is being treated as suspicious.

"The most likely cause is deliberate ignition."

Anyone with any information should contact the police on 101.