CHIPPENHAM NEWS: POISON pen writers with a grudge against the Duchess of Cornwall have struck again with another spate of vile letters.

Police launched an investigation last month after the Chippenham News handed over a series of crude and insulting letters about Prince Charles' new bride.

One of four new letters sent to the newsroom this week suggests eerily that the writer was at the Devon County Show with the royal couple, and the writer describes watching the Duchess of Cornwall eating.

The letter, sent from the made-up address of Clowes Street, Trowbridge, described how the writer's parents live in Devon and goes on to compare the Duchess of Cornwall to a pig eating in her trough.

Chippenham News editor Andy Sambidge has decided not to print any of the letters, believing the writers' names and addresses are fakes.

The abuse focuses not just on Camilla but on her husband Prince Charles. In two letters there are calls for Prince Charles to abdicate and one accuses him of lowering himself into the "pig swill".

In another letter the writer described Prince Charles as "a pathetic wimp" and "the only prince to bring the brothel to the throne and into the public's front room."

In another letter, written from the non-existent address of Devonshire Road, Trowbridge, the writer describes the Prince of Wales as tied to the Duchess of Cornwall's apron strings.

Just one of the letters uses an existing address, but when the Chippenham News investigated a caretaker with no knowledge of the letters turned out to live there.

All the previous letters sent to the newsroom were posted in London, according to the postmark, but the four letters received this week were all sent from the Bristol/Bath area.

As revealed by the Chippenham News last month, Camilla and Prince Charles have received almost 1,000 poison pen letters opposing the royal wedding, many of which were posted to the Duchess's home in Reybridge, near Lacock.

An investigation into the letters is ongoing.