Glushchenko's parole hearing has been scheduled for May 25.
Glushchenko was sentenced to a fine of 300,000 roubles and 17 years of maximum security prison in August 2015 for "taking part in the organization of the murder." His defense had insisted on a lighter punishment, as the former MP had admitted his guilt and cooperated with the investigation.
The former politician was previously convicted to 8 years in prison in 2013 for extortion.
Yury Kolchin, another organizer of the murder, was previously sentenced to 20 years in prison in June 2005, while Vitaly Akinshin was sentenced to 23.5 years for pulling the trigger.
Vladimir Barsukov, leader of the Tambov gang [one of Russia's most notorious criminal organizations - Ed.], was charged with murdering Starovoitova in April 2019. Barsukov, who has been in custody since 2007, is currently serving a 24-year prison sentence for his involvement in organized crime.
Galina Starovoitova, a prominent reformist politician and minority rights activist, was shot dead in the stairwell of her apartment building in St. Petersburg in November 1998. The court has acknowledged that her murder was politically motivated. The people that ordered the killing have not yet been found.