By Agence France-Presse A senior Russian police officer was one of two men shot dead in a Moscow street on Saturday, city officials said. According to one media report, the officer had already survived a previous attempt on his life -- and the second victim was his brother. "An unknown person fired on two men in the west of the capital, one of whom was the director of the anti-extremism centre for the Republic of Ingushetia," the Moscow investigative committee said in a statement. Both men died on the spot and investigators were checking surveillance cameras in the area, the statement added. The TASS news agency, citing police sources, said the slain officer was Ibragim Eldzharkiev and the second victim his brother. Early January, Eldzharkiev survived an attempt on his life when his car came under machine gun fire on a road in Chechnya, the republic neighbouring Ingushetia, according to sources cited by Russian news agencies. Three police officers travelling with him were seriously wounded, but he escaped unhurt, they reported. In the 1990s and 2000s, the Russian Caucasian republics of Ingushetia and Chechnya were the site of two wars between Moscow and separatist fighters who turned increasingly towards radical islamism. The anti-extremism centres, part of Russia's interior ministry, have the job of fighting radicals across the Russian federation.