A Prague appeals court has upheld a lower court ruling that a Russian man who faces charges of hacking computers at American companies can be extradited to the United States.

Czech authorities arrested Yevgeniy Nikulin in Prague in cooperation with the FBI in October last year. He is accused by U.S. prosecutors of penetrating computers at Silicon Valley firms including LinkedIn and Dropbox in 2012.

Moscow also wants him extradited on a separate charge of internet theft in 2009.

Prague's Municipal Court ruled in May that both extradition requests meet the necessary legal conditions.

Nikulin appealed his extradition to both countries but later withdrew an appeal against his extradition to Russia.

Following Friday's ruling by Prague's High Court, the justice minister will have the final say.