On August 10 the FSB, the successor organization to the KGB, declared that it had prevented "terrorist attacks" in Crimea over the weekend. According to the security service, an FSB agent was killed in a firefight with saboteurs on August 6 night near Russian-occupied Armyansk, a town close to the frontier with mainland Ukraine. Several Russian and Ukrainian citizens were arrested, the report claims, and a cache of explosives and weapons was discovered.