article_snippet: We are carefully checking into this,' said chairman of the Moscow Public Monitoring Commission, Anton Tsvetkov. '
article_snippet: More startling revelations to be reported today included claims Nemtsov - a prominent Putin foe -'s murder was ordered by a senior security official in Chechnya.
article_snippet: The identity of the man - named only Ruslan, and said to be a close relative of top political figures in the region - is known to Nemtsov - a prominent Putin foe - and the FSB, but Nemtsov - a prominent Putin foe - has not been detained, reported Novaya Gazeta, Russia's leading investigative newspaper.
article_snippet: Nemtsov - a prominent Putin foe - has been told in addition that three other prominent liberal figures are on a chilling Chechen 'hit list'.
article_snippet: three other prominent liberal figures are exiled Mikhail Khodorkovsky, a former oil tycoon who was jailed for a decade under Nemtsov - a prominent Putin foe - but now says Nemtsov - a prominent Putin foe - has ambitions to become president; Alexei Venediktov, respected editor of editorially independent Ekho Mosocw radio; and glamorous Ksenia Sobchak, a TV presenter and opposition blogger, daughter of Nemtsov - a prominent Putin foe -'s political mentor Anatoly Sobchak, former mayor of St Petersburg.
article_snippet: Other media in Russia today named him as Ruslan Geremeev.
article_snippet: In sensational claims, Novaya Gazeta reported that the man who ordered 55-year-old Nemtsov's murder is a highly decorated major in the same Interior Ministry unit called 'North' in Chechnya in which alleged killer Dadayev served until recently.
article_snippet: Novaya Gazeta said Novaya Gazeta did not name the man who ordered 55-year-old Nemtsov's murder because of the presumption of innocence, but admitted the alleged mastermind's identity 'is known to dozens, if not hundreds, of members of the FSB and the Investigation Committee'.
article_snippet: Nemtsov was a prominent anti-Putin foe.
article_snippet: Nemtsov is said to have been questioned by investigators on Monday, though not detained.
article_snippet: Nemtsov uncle was named as Suleiman Geremeev, a senator for Chechnya in the Russian upper house.
article_snippet: Another relative is Russian MP Adam Delimkhanov, a close henchman of powerful Chechen ruler Ramzan Kadryov, a key Putin ally. '
article_snippet: The head of state was informed about the details by the director of the FSB Alexander Bortnikov,' reported Novaya Gazeta, which is part-owned by ex-Soviet leader Mikhail Gorbachev and by Alexander Lebedev, proprietor of The Independent titles and the London Evening Standard.
article_snippet: Several reports say the disclosures prevent a major challenge for Putin, because Putin must allow the prosecution of a key figure from the security services professing total loyalty to Putin in Chechnya or snub Putin Moscow law enforcement cadres who have exposed the murder plot.
article_snippet: For some time, there has been a power struggle between those under Kadyrov's command, and those at federal level in Moscow, with claims the Chechens have a free hand to conduct illegal operations.
highlights_snippet: Media have claimed opposition leader Boris Nemtsov death was ordered by a Chechen security official .