Ivan Prokopenko, 39, was head of the pretrial detention facility in Moscow's Matrosskaya Tishina prison during the period in question. In July 2009, one week before Magnitsky was to undergo a prescribed ultrasound and surgery for pancreatitis, Prokopenko ordered Magnitsky's transfer to Butyrka prison, which did not have the capabilities to carry out those procedures. Magnitsky died in Butyrka about four months later.