The Newnan Times-Herald is reporting that Mockingjay Part 1 filming has resumed at the Caldwell Tanks in Newnan, GA as of today.
Just weeks before the release of Catching Fire, the film crew was at Caldwell Tanks building a coliseum set in the largest of the warehouse buildings. The first shoot began on Dec. 18, which only lasted two days. Today, the filming got underway again, though it is unknown for how long they plan to film. The set is obviously closed to the public.
Thanks to the Newnan Times-Herald for the info!