Russia’s military intelligence officers have found videotapes showing the details of criminal acts perpetrated Chechen rebels and foreign mercenaries. Most of the rebels on the tapes come from Arab countries, officials at the Federal Security Service told Interfax on Friday. Rebels are known to make such video accounts for their bosses who guide and finance their operations in Chechnya and also provide a propaganda cover, the officials are quoted as saying. The tapes are now being thoroughly examined. "Special equipment allows one to determine with absolute precision the date and time of filming and make accurate portraits of all participants in terrorist acts," they added.