LONDON, October 1 (IslamOnline.net & News Agencies) - A British detainee said he has been abused in Guantanamo, adding he witnessed the deaths of two other detainees at the hands of US military personnel, according to a letter sent to his lawyers.

Moazzam Begg, from Birmingham, said in the letter, unveiled Friday, October 1, that he watched as two fellow detainees were killed in US custody, and that he has come under torturous practices by his US jailers and investigators.

“During several interviews, particularly -- though not exclusively -- in Afghanistan, I was subjected to pernicious threats of torture, actual vindictive torture and death threats - amongst other coercively employed interrogation techniques,” Begg was quoted by the Press Association as saying in the letter.

“I state here, unequivocally and for the record, that any documents presented to me by US law enforcement agents were signed and initialed under duress, thus rendered legally contested in validity.”

He went on: “The said interviews were conducted in an environment of generated fear, resonant with terrifying screams of fellow detainees facing similar methods”.

Begg, who has been detained for more than two years, said he was denied natural light and fresh food, had been held in solitary confinement, and was forced to sign and initial documents presented to him by US officials.

He also said he was physically abused, stripped and paraded in front of cameras held by US personnel.

“In this atmosphere of severe antipathy towards detainees was the compounded use of racially and religiously prejudiced taunts.”

“This culminated, in my opinion, with the deaths of two fellow detainees at the hands of US military personnel, to which I myself was partially witness.”

Begg’s lawyers said the document revealed he “has been, and continues to be, abused and tortured by the United States”.

The detainee's father, Azmat Begg, said his 36-year-old son made allegations of "continuous torture" in the four-page note.

“It is a very heartbreaking sort of letter,” Begg, 65, a former bank manager, was quoted by the Guardian as saying Friday.

“He must be a very brave boy, a very strong boy, because no ordinary man could cope with this.

“The letter says they have been beating and continuously torturing and asking the detainees to sign papers.

“They killed two prisoners in front of them, it says, and then they put a gun in front of him, against his head, and said ‘Now it's you’.

“They pulled all the clothes from his body and asked him to parade in front of all the cameras.”

Begg insisted he was a law-abiding British citizen, that he had never met Osama bin Laden and was not a member of his Al-Qaeda or any other paramilitary organization.

The accusations from Begg add to a series of abuse claims about the US detention center in Cuba, particularly from former British detainees.

“It's exactly what we thought from the testimony of others who have come back from Guantanamo Bay -- exactly what we thought was happening,” Begg's lawyer Gareth Peirce said.

Peirce said the letter was given to her earlier this week by Begg's American lawyer who had been to Guantanamo to see him.

The US military interrogation techniques have come under fire amid revelations of abuse of Iraqi prisoners at the Abu Ghraib jail near Baghdad, after photos were splashed out showing physical and sexual abuse of the detainees by American soldiers.

Washington says the four remaining British detainees at Guantanamo pose a security threat.

Five other Britons were released in March and freed within a day by British police without any charges.