Group With Alleged Qaeda Ties Claims Responsibility for St. Petersburg Metro Bombing The group, the Imam Shamil Battalion, said a suicide bomber acted on the orders of Ayman al-Zawahri, the Qaeda leader, and it threatened additional attacks. Share: Facebook Twitter Google+ Stumble Digg Email ThisBlogThis!Share to XShare to Facebook Related Posts:Trilobites: Ancestral Climates May Have Shaped Your NoseGerman Authorities Raid U.S. Law Firm Leading Volkswagen’s Emissions InquiryMount Etna Erupts in Sicily, Injuring at Least 10‘I Am an American Because of Him’: The Journey of Pence’s Irish GrandfatherSomali Pirates Release Hijacked Tanker and CrewShinzo Abe Hurt by New Disclosures Over Ties to Extreme Right-Wing Group