In October 2016, for the day of the parliamentary election, a coup d'état was prepared by a group of persons that included leaders of the Montenegrin opposition, Serbian nationals and Russian agents; the coup was prevented. In 2017, fourteen people, including two Russian nationals and two Montenegrin opposition leaders, Andrija Mandić and Milan Knežević, were indicted for their alleged roles in the coup attempt on charges such as "preparing a conspiracy against the constitutional order and the security of Montenegro" and an "attempted terrorist act."