A juror was dismissed last week when he was discovered to be a convicted killer, the Russian Legal Information Agency reported. Four more jurors said they could not remain on the panel, leaving fewer than 12.
Anna Politkovskaya, 48, was gunned down in 2006 in the Moscow apartment building where she lived. She worked for the independent Novaya Gazeta and had become known for her coverage of human-rights abuses in Chechneya.
The defendants include Sergei Khadzhikurbanov, the former police officer, three brothers, Rustam, Ibragim and Dzhabrail Makhmudov, and their uncle Lom-Ali Gaitukayev.
The most recent delay in the trial occurred in October when a quarantine was declared in the facility where Khadzhikurbanov is being held. Last week, the prosecutor accused his lawyer, Musad Murayev, of arranging the quarantine, a charge Murayev denied.
Selection of a new jury is expected to begin in mid-January.