The series is also said to take place before film character Charlie Roan, but after the New Founding Fathers of America and The Purge itself have been well-established.
Garza, meanwhile, will play a role tied to an apparent cult around The Purge itself.
DeMonaco will write and executive produce the ten-episode series, with Thomas Kelly is on board as executive producer and showrunner.
Two new citizens are officially joining The Purge.