Russ Brandon who was the president of the Buffalo Sabres and Buffalo Bills turned in his resignation for both teams on Tuesday.

According to the Buffalo News, Brandon decided to resign after there was an internal investigation about his workplace conduct and also allegations of personal misconduct.

“I have been contemplating transitioning out of my role for some time,” Brandon wrote. “My goal when the Pegula’s purchased the franchise was to reach 20 years with the Bills in which I achieved this past November. Given where we are from a timing standpoint, particularly with the conclusion of the NFL Draft, now seems like the time to make that transition.”

“As grateful as I am for the amazing experience and the incredible people I’ve had the privilege to work with the past two decades, I am just as anxious for the professional opportunities that lie ahead.”

Live and breathe the NFL?

🚨 Get viral NFL graphics, memes, rumors and trending news delivered right to your inbox with the Clutch Newsletter.

Brandon joined the Bills in 1997 as executive director of business development and worked his way up to becoming the president in 2013. He also took over as the Buffalo Sabres team president in 2015.

Kim Pegula will take over the positions that Brandon leaves vacant and has confidence in their jobs moving forward.

“We have a tremendous amount of confidence in the strong leadership teams we have built within each of those entities over the last several years,” the Pegulas said in a statement. “We are excited about the direction of our teams, especially after this past weekend’s NFL draft and NHL lottery results. Our focus remains on building championship teams on and off the field for our fans and community.”