Ed Rush, the Pac-12 coordinator of men’s basketball officiating, resigned on Thursday evening, according to the conference. Rush had been under investigation after allegedly offering officials money or a paid vacation if they called a technical foul on Arizona head coach Sean Miller during the conference tournament.

“I would like to thank the Pac-12 for giving me the opportunity to lead a group of officials who are working so hard to make the Pac-12 the best officiated conference in college basketball,” said Rush in an official statement from the conference. “My first and highest concerns have always been the integrity of the game of basketball and the honor of the craft of officiating. While I am proud of what we have accomplished, my decision to resign reflects my strong desire to see the Pac-12 officiating program continue to grow and thrive.”

Jeff Goodman of CBSSports.com was the first to break this story after Miller was hit with a controversial technical foul in Arizona’s 66-64 loss to UCLA in the Pac-12 tournament semifinal. It was Miller’s first technical of the season.