Russian Islamist Doku Umarov called on his allies in a recent video to use "maximum force" to disrupt the 2014 Winter Olympics in Sochi.
"They plan to hold the Olympics on the bones of our ancestors, on the bones of many, many dead Muslims buried on our land by the Black Sea," Umarov said in the video, according to The Guardian. "We as mujahideen are required not to allow that, using any methods that Allah allows us."
Russia's most wanted man, Umarov leads a group called the Caucasus Emirate. The group has claimed responsibility for organizing many attacks, including suicide bombings that killed 37 people at a Moscow airport in 2011 and at least 40 people on the Moscow subway in 2010, according to Reuters.
"I call on you, every mujahid, either in Tatarstan, Bashkortostan or on the territory of the Caucasus to use maximum force on the path of Allah to disrupt this Satanic dancing on the bones of our ancestors," Umarov said, according to Reuters, referring to predominantly Muslim regions in Russia that are far from the North Caucasus.