A Cuban intelligence officer convicted of spying in the United States was set to be released from federal prison on Thursday after spending around 15 years behind bars, according to NBC News. Fernando Gonzalez, 50, a member of the so-called Cuban Five, is to be released and is expected to return to Cuba in a few days, publication El Nuevo Herald reported. Gonzalez, along with other members of the spy ring were arrested in 1998. The Cuban government eventually acknowledged that they targeted anti-Cuban government exile groups in the United States, but denied spying on American interests. However, all five were convicted of spying on U.S. military installations.