"I simply cannot confirm it. I have no information, which would allow me to confirm it," Peskov told journalists.
Afanasiev was detained by the Russian Federal Security Service (FSB) in Simferopol in May 2014 and sentenced to seven years in prison for plotting to carry out terrorist attacks in Crimea. Another person involved in this case, Oleg Sentsov was sentenced by a Russian military court to 20 years in jail on the same charges.
Details of Soloshenko's case have not been revealed, but media reports suggest he was sentenced to six years in jail for attempting to transfer Russian weapons to Ukraine.