NEW YORK, May 11 - RAPSI. Viktor Bout will serve his prison sentence in a high security prison in Colorado, Bout's defense attorney told RIA Novosti on Friday.

On Thursday, Bout's defense attorney Albert Dayan filed a request to Judge Shira A. Scheindlin, asking her to revoke the penitentiary department's decision to move Bout to the Federal Correctional Facility in Colorado. Dayan said the conditions at the prison are even worse than at the Metropolitan Correctional Center in Manhattan, where Bout spent nearly 14 months in solitary confinement.

Dayan maintains that the decision stems from considering Bout as terrorist, despite the fact that the court previously found that this category did not apply to him.

The defense is seeking to postpone Bout's transfer to the Colorado prison at least for the hearing of his appeal against prison sentence and the possible further appeal to the penitentiary department.

Bout was sentenced to 25 years in prison by the New York Federal Court after a jury found him guilty of planning to sell arms to the Revolutionary Armed Forces of Columbia.

The 45-year-old former military officer has denied the charges against him. The Russian Foreign Ministry believes the U.S. authorities have not provided sufficient evidence of Bout's intent.