Crown lawyers expect to present evidence against the Toronto-area terror suspects that show some of the accused planned to commit attacks more deadly than the London subway bombings, according to documents filed in court containing anticipated evidence.

New details contained in the Crown factum that was filed at the trial of the only remaining youth charged allege prosecutors have audio tapes and video tape evidence of some of the suspects plotting several explosions.

The factum contains transcripts of alleged conversations between suspects, including one where one of the accused speaks about the group's violent ambitions.

"They're probably expecting what happened in London or something," the man is quoted as saying. "... Some bombing in a subway kills 10 people and everybody gets deported.

"We're not doing that. ... So our thing it's, it's much, much greater on a scale ... you do it once and you make sure they can never recover again."

The July 2005 bombings in London, carried out by four suicide bombers, claimed the lives of 52 commuters.

One video allegedly shows the Toronto-area suspects at a wooded area in rural Ontario. A passionate speaker is heard saying the men have to "wage war against Rome" -- the Western powers including Canada, the United States, Britain and France.

"Our mission's greater, whether we get arrested, whether we get killed .... Rome has to be defeated. And we have to be the ones that do it," the speaker allegedly says.

The Crown alleges the accused attended two so-called training camps -- one near the town of Washago and the other at the Rockwood Conservation Area near Guelph. The suspects are accused of taking part in military-style exercises in camouflage gear and firearms training with a 9-mm firearm.

The group is accused of planning to storm the Parliament buildings in Ottawa, taking politicians (including the prime minister) hostage and beheading them.

The Crown's filing also alleges that the men planned to construct a radio frequency remote-controlled detonator.

None of these allegations have been proven or tested in court.

The 18 suspects of the alleged al Qaeda-inspired cell were arrested in July 2006. Fourteen men, four of whom are free on bail, are charged with various terrorism-related offences.

Four teens were initially charged, however, charges against three of the youths have been stayed.

The Crown is asking the judge to impose a publication ban to prevent the media from linking evidence at the trial to any of the other adult suspects by name, saying the evidence is "prejudicial" and could destroy any chances of the other suspects getting a fair trial.

The youth's trial has begun with numerous pretrial motions. Evidence is not expected to be heard until mid-to-late May.

Lawyers have said the trials for the adults could be months or even years away.

With a report from CTV Toronto's Chris Eby