After suspending 284 accounts originating in Iran and Russia, Twitter on Tuesday announced it has cracked down on additional 486 such accounts that were designed to mislead people in the Middle East, Latin America, Britain and the US.

"Since our initial suspensions last week, we have continued our investigation, further building our understanding of these networks. "In addition, we have suspended an additional 486 accounts for violating the policies outlined last week. This brings the total to 770," Twitter said in a statement.