An investigation by the BBC revealed that British special forces in Afghanistan had killed at least 54 people in what it described as "suspicious circumstances", but the British Ministry of Defense said that its previous investigation did not prove these charges.

The BBC's investigation stated that the victims were routinely killed in cold blood during the night raids, and that British forces placed weapons next to their bodies to justify the crime, the investigation said.

And the BBC quoted in the investigation - according to workers within the special forces - that the regiments of these special forces were competing to kill the largest number of Afghans.

The investigation, which lasted for four years, indicated that the officers, including General Mark Calton Smith, who heads the British Special Forces, were aware of this.

This investigation also showed that emails reveal that senior officials were aware of unlawful killings, but did not report them.

The BBC added that under British law, failure to report the crime to the military police is an offense in itself.

Carlton Smith - who retired last month from the position of Army Command - declined to comment, while the Ministry of Defense said that previous investigations into the behavior of British forces in Afghanistan had not found sufficient evidence to charge charges.

The Ministry of Defense confirmed in a statement sent to the "BBC" that no new evidence was presented, "but the military police will look into any charges if new evidence emerges."

"The British armed forces have served bravely and professionally in Afghanistan and we will always ensure that they adhere to the highest standards," she added.