Montreal fans celebrate next to a police officer on Monday night after the Canadiens defeated the Pittsburgh Penguins to take their NHL Eastern Conference semifinal to a Game 7. ((Graham Hughes/Canadian Press))

Montreal Canadiens fans celebrated in the streets on Monday night following the team's Game 6 victory over the Pittsburgh Penguins to take their final to a deciding series match.

Montreal police closed down a chunk of Ste-Catherine Street, one of the city's main commercial drags, to make way for the crowd of revellers.

The Habs defeated the Penguins 4-3 at the Bell Centre, forcing a seventh game in their NHL Eastern Conference semifinal series.

Canadiens fan Greg Brown said cheers of support from the home crowd likely boosted the team.

"[It was] deafening, absolutely deafening," said Brown. "Like a rock concert multiplied — unbelievable."

Even some Penguins fans were awed by the underdog Canadiens' victory.

Once again, the real hero of the game was Habs goalie Jaroslav Halak, who stopped 34 shots on net, said Penguins fan Lorin Kurtz.

"Let's be honest, Halak's definitely the MVP right now, got to give it to him," said Kurtz. "I'm a hockey fan as well."

4 arrests made

Fans also lauded Canadiens winger Mike Cammalleri, who scored twice to keep the team's playoff dreams alive.

The city has a history of vandalism and violence following some hockey games, but police said the crowd was relatively well behaved on Monday night.

Officers made only four arrests, said Sgt. Ian Lafrenière, who credited the city's decision to close Ste-Catherine Street.

The cool weather may also have played a role in encouraging rowdy fans to head home, Lafrenière said.

Police said they will also be out in full force Wednesday night for Game 7 in Pittsburgh. The game will be shown on big screens at the Bell Centre in Montreal.