“A preliminary hearing is scheduled for Aug. 5,” Anna Stavitskaya told Interfax.

The hearings, which will be held behind closed doors in the Moscow Regional Military Court, will consider procedural points and determine when the retrial will start, Interfax reported.

On Feb. 20, a jury cleared former police officer Sergei Khadzhikurbanov and Chechen brothers Dzhabrail and Ibragim Makhmudov, but the Supreme Court overturned the verdict and ordered a retrial last month.

The three will go on trial with a fourth defendant, former Federal Security Service officer Pavel Ryaguzov, who was accused with Khadzhikurbanov of abuse of office in a separate case.