Reports from Russia say a prisoner swap is being planned to bring 10 suspected Russian spies back from the US. Family members of a scientist jailed in Russia for spying for the CIA said he and unspecified others would be exchanged. <br/><br/>Igor Sutyagin, a nuclear weapons specialist, is serving a 15-year jail sentence for passing information to a UK firm allegedly used as a front by the CIA. <br/><br/>According to his brother, he said he had been told by Russian officials that he would be released and sent to the UK in exchange for an unknown number of spies. <br/><br/>Neither the Russian nor the US authorities were commenting on reports of the swap. The 10 suspected Russian spies were arrested last month in Virginia and New York state on suspicion of working as illegal agents for the Russian government.