(AGI) Rome, March 2 - The murder of opposition politician BorisNemtsov is a "heinous crime", Russian Foreign Minister, SergeyLavrov, told the United Nations Human Rights Council. However,it was "sacrilege to use such tragedies ... to try tosubstitute investigators and law enforcement by pushingpoliticised, ungrounded and provocative interpretations", hesaid at the meeting in Geneva on Monday. He exchanged a ratherchilly handshake in front of the TV cameras with U.S. Secretaryof State, John Kerry, before they discussed the Ukraine crisisand the Nemtsov case. Washington has stressed it wants anin-depth and transparent investigation. Russia is preparingfor the funeral of the former deputy prime minister who wasshot down near the Kremlin on Friday night. Organisers claimed70,000 people attended a march "against fear" in Moscow onSunday. Alexei Navalny, a leader of the weak opposition toPresident Vladimir Putin, has been told by judges he may notattend the funeral. He is serving a 15-day prison sentence fordistributing information on the anti-government march which was scheduled for March 1, but turned into a commemorative paradein honour of Mr Nemtsov. Anna Duritskaya, the 32-year-oldUkrainian model who was with Mr Nemtsov when he was shot, saidshe did not notice they were being followed as they walked homefrom a restaurant. She was so upset that she could not remember the make of car used by the killers. Severalsurveillance cameras were out of use because they were beingrepaired. Since the shooting only a very poor quality video hasbeen published, but it was taken from an angle in which thekiller is always behind a snowplough. The area is one of themost patrolled in Russia, because of its proximity to theKremlin. However, it still took police 10 minutes to reach thespot. Mitya Aleshkovski, a former photo journalist for Tasspress agency, published a photo of another camera focused"exactly on the scene of the murder" on Twitter, but no otherpictures have been published. . .