https://www.theverge.com/2019/1/31/18205735/facebook-pages-removed-iranian-influence-campaign

Today, Facebook removed nearly 800 accounts that were engaged in coordinated inauthentic behavior originating in Iran and operated in a number of other countries across the world.

In total, Facebook identified 262 pages, 356 accounts, and three groups that were involved in the coordinated inauthentic behavior by Iran. There were 162 Instagram accounts that were identified as well. Facebook would not confirm that the accounts were created by the Iranian government. No related behavior was found on WhatsApp, according to Facebook’s head of cybersecurity policy Nathaniel Gleicher.