Police say the man is also connected to the fatal shooting of Arriell Dixon and the case of a woman who jumped out of a window last year after being beaten and shot.
The indictment alleges an executive and contractor submitted fake bids under other regional construction companies' names that were higher than the winning bids.
Nicholas Haglof pleaded guilty to one count of accessing with the intent to view child pornography. He was working as a police officer at the time of the crime.