By DEBRA KILLALEA

Last updated at 10:53 07 April 2008

Disgraced: The soldiers have brought shame on the Lancaster Regiment

An investigation has been launched after a 15-year-old girl was smuggled on to an Army base and filmed having "roasting" sex session with up to 17 drunken soldiers.

Police are working with military authorities after speaking to the schoolgirl, it was confirmed.

The sex session was filmed at the Bourlon Barracks at the Catterick Garrison in North Yorkishire last week.

It is believed the youngster had been drinking before the incident, which involved soldiers from the 2nd Battalion, Duke of Lancaster's Regiment.

They had pushed campbeds together so that some of them could have sex with the girl while others watched.

Because of her age, the soldiers could be charged with having unlawful sexual intercourse.

Footage of the incident was passed to the Ministry of Defence by The People newspaper.

One soldier said: "They pushed two campbeds together to have sex with her and then gathered around.

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More than 7500 soldiers are stationed at Catterick Garrison in the North-East of England

"Many of them were filming it and were pumped up on booze. It was appalling.

"They have dishonoured the Army and brought shame on their regiment. Their behaviour makes me sick."

A North Yorkshire police spokeswoman confirmed officers have seen the footage and had traced and interviewed the girl involved.

"With support of the Royal Military Police's Special Investigations Branch, efforts are still ongoing to identify everybody connected to the footage," she said.

The spokeswoman added that no arrests had been made and inquiries were continuing.