As the NHL investigates the alleged use of a homophobic slur in Monday’s Tampa-Toronto game, Maple Leafs general manager Kyle Dubas is pledging assistance with their efforts.

“The issue of homophobia is one the Toronto Maple Leaf Hockey Club strongly condemns and takes very seriously,” Dubas said in a statement. “We are in communication with the NHL and are cooperating fully with their office.”

The league announced its investigation after online reports surfaced of an apparent slur that was picked up by a microphone during the Sportsnet Ontario broadcast. It wasn’t immediately clear where the foul language might have come from since there are multiple microphones positioned at ice level and near the players’ benches.