A newly unsealed whistleblower lawsuit filed by two former professors at Arizona Summit Law School alleges that the school and its owner, InfiLaw Corp., violated federal student loan rules in order to collect more than $533 million in government-backed financial aid from 2012 to 2015.

The qui tam suit, which the plaintiffs voluntarily dismissed in February and the court unsealed March 26, is the second whistleblower suit brought by faculty from an InfiLaw school to be made public. Another case focusing on InfiLaw’s now defunct Charlotte School of Law makes similar claims to the Arizona suit, and is still pending. Arizona Summit and InfiLaw’s Florida Coastal School of Law are for-profit institutions, as was Charlotte.