WINNIPEG — A Winnipeg hockey dad has been convicted of attacking a rival parent and harassing two others in an embarrassing display following his 12-year-old son's game.

Paul Buchanan shook his head in disbelief Monday after being found guilty of assault, uttering threats to kill and criminal harassment for the December 2009 incident.

"Am I facing jail time? All over a 12-year-old hockey game?" Buchanan said loudly in court following the verdict. "Thanks, thanks a lot," he added to nobody in particular.

Sentencing has been adjourned until early next year, although the Crown indicated they likely won't be seeking custody. Buchanan remains free on bail.

Provincial court Judge Robert Heinrichs scolded Buchanan for his conduct over a game that is supposed to be all about having fun.

He said this shows how some parents take matters far too seriously and allow their own interests and emotions to ruin it for everyone else.

"There is probably no sporting event Canadians are more passionate about than hockey," said Heinrichs.

Court was told Buchanan's son played for a Fort Garry minor hockey league team which had just won a game against another team from the area.

While the players were still in their dressing rooms, Buchanan got involved in a heated discussion with the father of a player on the losing team as they sat in the canteen area of an arena in St. Norbert.

According to several witnesses, Buchanan made a snide remark to another father whose son he used to coach and an argument ensued.

Witnesses said Buchanan angrily shoved the man into a wall, screamed obscenities at him and threatened to kill him.

Several other parents intervened, including a hockey mom who said Buchanan punched her in the breast.

The melee carried on outside the arena with another physical fight. Buchanan later e-mailed more threats to the other father.

Buchanan also made more than a dozen phone calls to the woman who had intervened in the attack, despite the fact she repeatedly told him to stop calling.

The woman and her partner eventually called police when the phone wouldn't stop ringing well past midnight.

"He was ranting and raving, yelling and swearing," she told court.

Buchanan admitted he may have overreacted with the phone calls, claiming he suffers from "social anxiety" and that he had consumed some alcohol and medication.

But he also said he was "humiliated" by what happened and "wanted to make things right." He denied initiating the fight at the hockey rink, claiming he was just extending a friendly greeting when the other parent verbally and physically attacked him for no reason.

Heinrichs rejected his version of events Monday, saying it didn't ring true and was clearly self-serving in the fact of overwhelming evidence.

"His behaviour spiralled out of control. His evidence on what happened that day is not accepted. The conduct was completely reckless on his part," said Heinrichs.