One of the three defendants indicted two months ago on federal corruption charges stemming from a major contract between Chicago and a major red light camera vendor will now plead guilty.

According to a new filing submitted to the federal court in Chicago on Wednesday, former Redflex contractor Martin O’Malley intends to appear before the court in early December to formalize his guilty plea. While the document does not explicitly say so, it’s likely that O’Malley also intends to testify against his co-defendants.

This marks the first guilty plea in a high-level case involving Redflex. Since losing the Chicago contract as a result of this corruption scandal, Redflex’s 2013 pre-tax profits in its North American division (its corporate parent is an Australian company) have plummeted over 33 percent—from $3.4 million in the first half of 2013, to $2.28 million in the second half.

O’Malley had been paid $2 million for his services, which had he been an employee would have made him the highest-paid. But according to prosecutors, much of that money was funneled to John Bills, a former managing deputy commissioner at the Department of Transportation, and a longtime friend of O’Malley’s.

O’Malley, Bills and former Redflex CEO Karen Finley all were indicted in August 2014 on 23 counts of mail fraud, wire fraud, bribery, and other charges. Karen Finley was vice president of operations at Redflex from 2001 until late 2005, and then was promoted to CEO from 2006 until February 2013.

Prosecutors also claim that via Redflex employees, Bills also acquired a Mercedes and a condominium in Arizona. A May 2014 affidavit written by an FBI special agent suggests that Bills likely used some of this money to purchase and store a boat, buy a car, pay for an addition to his Michigan cabin, pay for his girlfriend’s mortgage, pay his own mortgage, pay his kids’ schools, and hire a divorce attorney over the course of several years.

In December 2013, Ars reported on red light cameras nationwide, and in particular, Redflex's four cameras in the central California town of Modesto.