The bill makes it possible for officials to investigate the property of relatives of "a person who has committed a terrorist act" and make such people financially accountable for damage done by this person, according to parliament documents.
It also makes it a criminal offence punishable by up to ten years in prison if a person has "received training with a goal of committing terrorist acts," including learning how to use explosives and other weapons.
The bill also introduces punishment of up to six years in prison to people who participate in terrorist groups abroad if such activities harm Russia's interests.
Chechen fighters are currently active in some groups fighting in Syria, but foreign mercenaries "fight not for the idea, not for freedom, but for money" and must be held accountable, said one author of the bill, pro-Kremlin deputy Nikolai Kovalyov.
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