FILE - In this Saturday, Oct. 26, 2002 file photo a special forces officer carries a body out of the theater where hundreds of hostages were being held by Chechen rebels, Moscow, with unidentified bodies in the foreground. Two suspects in the Boston Marathon bombing have been identified to The Associated Press as coming from a Russian region near Chechnya. In the past, insurgents from Chechnya and neighboring restive provinces in the Caucasus have been involved in terror attacks in Moscow and other places in Russia. (AP Photo/Dmitry Lovetsky, file)