Moscow, Sept 1, SPA -- A woman strapped with explosives blew herself up outside a busy Moscow subway station Tuesday night, killing at least 10 people and wounding more than 50 - the second terrorist attack to hit Russia in a week. Seven days earlier, almost to the hour, two Russian jetliners crashed within minutes of each other in what officials say were terrorist bombings. All 90 people aboard the aircraft were killed, and the investigation has focused on two Chechen women believed to have been passengers. There was no immediate claim of responsibility for Tuesday's bombing, but suspicion was certain to fall on Chechen separatists and their supporters, according to a report of the Associated Press. Several female suicide bombers allegedly connected with the rebels have caused carnage in Moscow and other Russian cities in a series of attacks in recent years. Mayor Yuri Luzhkov told reporters near the Rizhskaya subway stop in northern Moscow that the bomber was walking toward the station shortly after 8 p.m. but turned around when she saw two police officers.--SPA1302 Local Time 1002 GMT www.spa.gov.sa/197036