Ms Estemirova's body was found a year ago near the Chechen Capital Grozny.

BBC: Killer of Natalia Estemirova 'on wanted list'

In 1990, a Tu-154 aircraft was forced to land in Turkey after taking off from the Chechen capital, Grozny.

BBC: History of hijackings in Chechen conflict

The kidnappers had refused to hand over the rest of the men's remains but the bodies were found on Christmas Day on the outskirts of the Chechen capital, Grozny.

BBC: News | UK | Chechnya bodies returned home

"There is a universal right to justice for innocent victims everywhere, whether they be buried under the rubble in New York, Grozny (the Chechen capital) or Moscow, " said Dick Oosting, head of Amnesty's EU office in Brussels.

CNN: Putin urges global terrorism fight

The Kremlin has buried a plan it mooted in December to have Mr Yeltsin make a token visit to Grozny, the Chechen capital.

ECONOMIST: Russia and Chechnya