The Migration and Law NGO reports on its website Svetlana Martynova's 22-year-old son was found dead in the central Russian city of Ivanovo on September 14.
Authorities say Aleksandr Martynov died of an overdose. However, Martynova claims her son never took any drugs.
She says her son's face was so swollen and covered with bruises that she hardly recognized him.
One Kyrgyz and 12 Uzbek nationals have been awaiting extradition in an Ivanovo prison cell. Uzbekistan accuses them of helping organize antigovernment protests in Andijon in May 2005.
The Russian Prosecutor-General's Office last month ruled that they should be deported to Uzbekistan. It later suspended the procedure pending a ruling by the European Court of Human Rights.
Andijon Anniversary Conference
Violence in Andijon, Uzbekistan, on May 14, 2005 (epa)
LISTEN
Listen to the Andijon conference.Part One (70 minutes):
Real Audio Windows Media
Part Two (60 minutes):
Real Audio Windows Media
The Uzbek government's response:
Real Audio Windows Media
THE COMPLETE STORY: A dedicated webpage bringing together all of RFE/RL's coverage of the events in Andijon, Uzbekistan, in May 2005 and their continuing repercussions.
CHRONOLOGY
For an annotated timeline of the Andijon events and their repercussions, click here.