A new federal lawsuit is sounding more alarms about the security and accuracy of Georgia’s midterm election, citing arbitrary and allegedly capricious practices that are causing “unacceptably high” rejections of absentee ballots.

The suit, filed late Monday in federal court in Atlanta, also singles out Gwinnett County for an escalating number of absentee ballot rejections. What was once a majority white bedroom community north of Atlanta has become a predominantly minority county still largely governed by white officials.