A previously unknown Chechen rebel group said in a statement published Monday it conducted a bombing on the Moscow metro last month that killed at least 40 people. Web site www.kavkazcenter.com, which normally publishes statements from extremist rebel warlord Shamil Basayev, who has organized a string of suicide bombings against Russian targets, said it did not know who stood behind the group. The ‘Gazotan Murdash’ group sent the statement to the Web site three times — first on February 8, two days after the bombing — and then phoned the publishers before the site agreed to publish, Kavkazcenter said in a comment. Full Story