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A Tory was captured on camera as she daubed obscene graffiti on the shop front of a Lib Dem councillor's business.

Karin Graham, 50, proudly posed for 'selfies' with Prime Minister David Cameron , ex-Tory leader William Hague and their MP Ann Marie Trevelyan.

The photos were taken as they campaigned for the Conservatives in Berwick, where Cllr Graham represents the party on the town council.

But the Mirror has obtained some shots which are unlikely to win votes - CCTV footage of her daubing 'W***er' and 'C***sucker' at the dead of night.

(Image: Andy Commins)

She was targeting a gift shop owned by Lib Dem Gavin Jones, in what has been described as a bitter and long-running Tory 'dirty tricks' campaign in the town.

In a scene reminiscent of a Carry On film, Graham is seen with an unknown male approaching the shop front with her lip gloss at the ready to write the foul messages.

The man puts a hood up to hide her identity - AFTER she arrives at the scene. The video then shows them making off from the into the darkness. Northumbria Police confirmed Cllr Graham was given a caution.

But Mr Jones has now asked the police's standards department to look at the way the inquiry was handled.

Another Berwick Tory Cllr Georgina Hill, 37, was forced to resign her job as press secretary to Mrs Trevelyan last month after making a sick joke about murderer Raoul Moat on Facebook.

Mr Jones, who stepped down as town councillor but remains a Northumberland Lib Dem county councillor, was also the subject of a series of abusive messages on Cllr Hill's Facebook page, including one which suggested he 'f*** off' out of Berwick.

(Image: Andy Commins)

Mr Jones, whose gift shop Jones&Jones was daubed with the graffiti, said: "I believe it is a matter worthy of further investigation and have now referred it to police standards, as I feel that the incident forms part of a wider campaign of harassment.

"Some of the remarks made on social media and at meetings have amounted to bullying in my view. They are trying to intimidate, and that is not acceptable in a modern democracy."

Cllr Graham stressed the graffiti incident happened before she was elected to the town council in the summer, and was carried out against a background of harassment claims on both sides of the political divide.

She added: "I wrote in pale lip gloss on his window, yes I did. I offered to make an apology, but the police said I did not need to. I do not have a criminal conviction so I do not have a record. I also offered to write him a letter, and the police again told me I did not need to.

"I am human, I'd had a couple of glasses of wine, I made a mistake."

(Image: Andy Commins)

Northumbria Police confirmed they received a report of graffiti having been drawn on the window at Berwick's Jones & Jones shop in August last year. That inquiry is the subject of Mr Jones' current complaint.

Their spokesman said: "Enquiries into the incident were carried out and a 50-year-old woman was issued with a police caution."

A caution is not a criminal conviction, but it could be used as evidence of bad character if the individual concerned is taken to court accused of another crime.