MOSCOW, October 9 - RAPSI. The children of Novaya Gazeta journalist Anna Politkovskaya have filed a request to revoke the plea bargain with ex-police officer Dmitry Pavlyuchenkov, charged with complicity in her murder.

October 7 was the sixth anniversary of Politkovskaya's tragic death. She was killed in the elevator of her own building in Moscow. Politkovskaya was well known for her investigations into human rights abuses in Chechnya and investigators believe her murder was connected to her professional activity.

"We submitted a petition to the Investigative Committee today which states the need to cancel the plea bargain made with Pavlyuchenkov, who is accused of murdering our mother," said Ilya and Vera Politkovsky.

After reading the case materials, they concluded that Pavlyuchenkov failed to fulfill his obligations and should be tried like all other suspects in the case. "It should be an open trial, under public and media control," the petition claims.

Ilya and Vera Politkovsky do not doubt Pavlyuchenkov's testimony about the other suspects' involvement in the murder, as there is other evidence which proves this. Nevertheless, they believe that he is trying to play down his role in order to escape a severe punishment.

They also hold that he gave the investigation a politically motivated lead to an individual he claimed ordered the murder, however this lead has not been corroborated by any evidence.

Six people are suspected of involvement in the case - former police officer Dmitry Pavlyuchenkov, Chechen-born Lom-Ali Gaitukayev, former police officer Sergei Kadzhikurbanov and the Makhmudov brothers, one of whom is alleged to have been the killer.