MOSCOW, October 4 (RAPSI) – The Moscow City Court has refused to reduce sentences for Rosneft executive son’s kidnapper, RAPSI learned in the courtroom Friday.

The 17-year old son of Rosneft former vice-president Mikhail Stavsky was kidnapped in April 2009. He was kept hostage in the Moscow suburbs for more than two months before finally being released.

The Stavsky kidnapping case has been shrouded in mystery, with few comments available from police or investigators by that time.

It was revealed afterwards that Chechen born Zarema Datayeva, Mikhail Gorchkhanov and Adam Tuganov were members of a criminal group and took part in kidnapping. 

Moscow’s Gagarinsky District Cout sentenced Gorchkhanov to 14 years in prison in August 2010, while Datayeva got 6 years. The aggrieved party also sought 10 million rubles (approximately $310,000) in compensation. The claim was granted in part, Gorchkhanov and Datayeva were ordered to pay 1 million rubles to the family of Stavsky.

Tuganov was sentenced to 6 years in August 2012.

According to the investigation, other two individuals involved in the kidnapping were killed in the antiterrorist operation in the North Caucasus. Another suspect in the kidnapping, Alexander Yashin, stands trial independently.

It was Gorchkhanov who filed a claim seeking to reduce his sentence, which was dismissed. The judgment over the compensation will be reconsidered.

Stavsky quitted Rosneft, one of Russia's largest oil companies, in October 2010.