Moira Cameron, left, poses with male colleagues at the Tower of London in September 2007. Two guards are under investigation for allegedly bullying Cameron. (Lefteris Pitarakis/Associated Press)

Women faced their share of trouble at the Tower of London, including three queens who were beheaded there.

But treachery has long been considered a thing of the past at the notorious 11th century fortress. At least until now.

If charges made Monday are true, the tower — a popular tourist attraction and home to Britain's Crown Jewels — will add bullying to the list of foul deeds committed there. The alleged victim: the first woman selected to join the all-male ranks of the tower's yeoman warders, popularly known as "Beefeaters."

Moira Cameron, a veteran of long military service, was named a warder at the tower two years ago. Hers was supposed to be a happy story about how a bastion of male supremacy could become a place where women, too, could serve queen and country.

On Monday, embarrassed tower officials conceded that Cameron had apparently been subjected to a campaign of bullying and harassment conducted by some of her resentful male colleagues. They said two male warders have been suspended and a third is under investigation for suspected harassment of Cameron.

A statement released by the Tower of London said harassment among its staff was "totally unacceptable" and that an internal investigation started last week as soon as the allegations were received.

The bullying allegations are an unpleasant wrinkle in what had been a generally popular move to bring women into traditionally male military roles.

Visitor guides

The 35 warders, all ex-military personnel, guide visitors around the tourist attraction, which houses numerous items of incalculable historic value.

In the Tower's earliest days, warders were used to monitor and occasionally torture high-profile prisoners kept in the tower, which was founded by King William I in 1066. Its history includes the executions of queens Catherine Howard and Anne Boleyn, both wives of Henry VIII, and Lady Jane Grey, known as "the nine days queen."

They are called Beefeaters, mostly because of the extra rations of meat they were given during medieval times.

Their brightly colored Tudor-style uniforms are part of the picture-postcard London that often enchants visitors from around the world. Cameron's introduction to the exclusive service went relatively smoothly, as far as the public could discern, but some tensions were present right from the start.

Cameron, with military experience both in Cyprus and Northern Ireland, said when her appointment was announced that some of her colleagues resented her presence.

"I've had some comments," she said at the time. "I had one chap at the gate one day who said he was completely and utterly against me doing the job."

Her reply was quick and piercing: "I said to him, 'I would like to thank you for dismissing my 22 years service in Her Majesty's Armed Forces.'"

Thrilled by job

But she seemed thrilled with her job, telling The Associated Press of the joys of giving historical tours and describing the tower as a wonderful place to work.

Simmering tensions were kept behind the fortress walls until Monday, when the Sun newspaper reported that Cameron's uniform had been defaced and that "nasty" notes had been left in her locker.

In addition, the newspaper said that Cameron's entry in the online encyclopedia known as Wikipedia had been defaced as part of the campaign against her.

Tower spokeswoman Ruth Howlett said she could not confirm the details cited in the newspaper report or elaborate on the reported harassment. She said the inquiry began after a staff member complained and that Cameron was still on active duty.

Cameron was nowhere to be seen in the tower grounds Monday. Her fellow Beefeaters went about business as usually entertaining tourists with tales of treason and beheadings, while others posed genially for photographs with families.

One Beefeater reacted warily when asked about the bullying reports, replying curtly that they were not allowed to speak about the incident.

A lone soldier stood guard as usual outside the row of small houses home to the warders and their families — described as a "close-knit community" by a tower statement.

Scotland Yard confirmed Monday that a 56-year-old man had been reprimanded about improper use of the internet. Details were not disclosed, but it was believed this man is the third warder being investigated for alleged harassment.