A Philadelphia man has pleaded guilty after he allegedly reported a hoax mass shooting and a bomb threat in response to a disagreement in his fantasy football league, according to police.

Witty banter and rivalrous trash talk are commonplace in fantasy football leagues, but one Philadelphia man’s online beef has resulted in an international investigation and federal charges after he falsely accused a fellow player of intending to carry out violent attacks,

Matthew Gabriel pleaded guilty to knowingly fabricating a mass shooting threat in Norway and a bombing plot at the University of Iowa.