Mass suspensions are hitting Facebook Groups, with users complaining that their groups have been deleted for unjustified reasons.

Facebook Group administrators have reported receiving ambiguous notices of violations for "terrorism-related" content or nudity, which they assert their groups did not share, reports the Express.

Facebook Group admins report receiving vague violation notices related to things like "terrorism-related" content or nudity, which they insist their groups haven't posted.

Facebook and Instagram are not the first social networks to experience mass suspensions. Pinterest and Tumblr groups have also reported suspensions in the past few weeks.