QUEBEC CITY - All parties in Quebec's National Assembly voted Thursday to condemn the smoke-bomb attacks which derailed Montreal's morning commute.

The official opposition deposed a motion in the morning to that effect and it was quickly passed without debate.

Premier Jean Charest was not in attendance, as he was speaking at the Union of Municipalities in Gatineau.

In a brief press conference he expressed his disapproval of the events.

"We hope they find the guilty parties," he said. "Disturbing lives for reasons that have nothing to do with them makes no sense. There's no need to use violence and intimidation, there's no excuse for that."

Meanwhile in Quebec Public Security Minister Robert Dutil described the acts as "intolerable" and "unjustifiable."

He said that it was a "coordinated action" and not a random act.

Dutil said that an investigation must be conducted about the "very serious incident."

"We can't make a link between what's happening with the students and what happened in the Montreal metro. We can't make that link," he said.

Transport Minister Pierre Moreau also denounced the act as one which caused "major inconvenience for all taxpayers."

Education Minister Line Beauchamp said that the smoke bombing would not help settle the student grievances, which have lasted three months thus far.

She said that "some sub-groups not necessarily tied to the student movement could be at the roof of the acts," hoping to take advantage of the current situation.

The CLASSE student group, the most radical of the three main groups, distanced itself from the events.

"People have to stop asking us for comments each time a disruption takes place in the city of Montreal. It's the job of the police, not us, to investigate these things."

Nadeau-Dubois said that the CLASSE members were just as inconvenience by the events as everybody else, as their meeting was delayed for over an hour Thursday morning.

Khadir blames police

Mercier MNA Amir Khadir denounced the vandalism but also criticized police, which he claimed knew for three months that certain people possessed smoke bombs.

"What are the police doing?" he asked. ""Maybe instead of attacking students they can put a bit of their energy into finding those who supplied smoke bombs," said the co-spokesman of the Quebec Solidaire party.

For the left-leaning leader, no possibility should be excluded from consideration, including the notion that police agents committed the acts.

"That's why we need an independence investigation, so we can eliminate that possibility," he said.

Khadir also blamed the Charest government for what he described as intransigence.

"There's only one way to put an end to this and it's for the government to negotiate sincerely," he said.

Justice Minister Jean-Marc Fournier was not impressed by Khadir's comments, which he described as "abominable."

In a written statement issued Thursday evening Khadir appeared to soften his comments.

"I might have expressed my idea poorly," he wrote. "I repeat that I have no proof or reason to blame the police for today's actions."

In Montreal Mayor Tremblay called on Montrealers to "take back their city."

In an afternoon press conference Tremblay said that cities should not be the "target of battles."

Without directly pointing a finger at the students, he said that "the longer we wait, the harder it will be to create the winning conditions to complete a dialogue between government and students."

He said that public security should not be undermined under any circumstances, regardless of the cause.