The University of Oklahoma has paid another nearly $490,000 to a law firm that investigated alleged sexual misconduct by former OU President David Boren.
The Oklahoman reports that the July payment to the Jones Day law firm brings total payments by the university to more than $1.5 million.
The university retained the law firm to look into allegations by a former student teaching aide that Boren touched him inappropriately on multiple occasions in 2010.
Boren has denied wrongdoing.
Boren is a former U.S. senator and state governor. In June he terminated his contract with the university he led for 24 years.
The Oklahoma State Bureau of Investigation also is looking into the allegations, and a multicounty grand jury is assisting state investigators.