"We are renewing our appeal, five years on, in the hope that someone will have information that could be the key to catching the offender.
“We carried out extensive enquiries at the time of the incident. Unfortunately we were unable to trace the person responsible. We now hope, by renewing the appeal, someone who was too frightened to speak at the time, can find the courage now and speak to us."
More top news
Cumbria Police are looking to recruit more than 100 new police constables, just months after the force had been threatened by budget cuts.
The River Kent is being dredged again after more storms at the end of January washed up to 100 tonnes of gravel back downstream
A look ahead at the forecast for the Border region.