The Twitter account under his name first posted on Dec. 7, 2017, with a video of the teenager explaining who he was. A Facebook account under the same name was set up two days before that on Dec. 5.
BuzzFeed News also contacted a number of activists working in Syria in an attempt to determine whether the account — and Najem — are genuine.
Kenan Rahmani, an advocacy adviser with the Syria Campaign who relocated to Washington from Aleppo, told BuzzFeed News that his contacts in Eastern Ghouta believed Najem was also "legit." However, he was unable to provide more details about the family.