A day after a Pakistani-American was arrested for plotting to set off a car bomb in Times Square, a Canadian Islamic leader has declared that domestic Muslims who would attack the United States should leave the country.

Naseem Mahdi, leader of an Islamic minority group known as the Ahmadiya, accused domestic terrorists of living "hypocritical lives" and gave advice for them to "be bold and leave and go and live in the land where their loyalties lie."

Mahdi also urged Muslims across the U.S. to be more vocal against acts of extremism, which he says will eventually bring the Islamic community to ruin.

"We have to stand up and say that this is nonsense, this is not acceptable to us. If our loyalties are somewhere else, why should we be here and enjoy the benefits of this beautiful country?" Mahdi said, according to AFP.

Mahdi's remarks came just a day after Faisal Shahzad, a Pakistani-born U.S. citizen, was arrested for attempting to set off a car bomb in the middle of a bustling Times Square in New York City.

Shahzad, who admitted to having trained in bomb making for five months under the leading Taliban group in Pakistan, said that he was motivated by the recent killings of Taliban leaders.

Pakistani Foreign Minister Makhdoom Qureshi spoke yesterday calling the attack "a blowback. This is a reaction. This is retaliation. And you could expect that."

"Let's not be naive. They're going to fight back," he told CBS News.

Islamic scholar Robert Spencer, however, called Qureshi's comments misguided, saying that "[t]he implication of [Qureshi's] statement is that if we stop resisting the jihadis, they will stop fighting us. But of course they wouldn't stop, for the Qur'an and Islamic theology and law mandate warfare against unbelievers simply because they are unbelievers, not solely because they are fighting back."

Spencer, who is the director of Jihad Watch, has also been critical of what he sees as soft-peddling by media and politicians over declaring Shahzad's attack to be an act of Muslim extremism.

"Faisal Shahzad and his car bomb is yet another indication of the tenacity and persistence of the jihad against the United States – and of the continuing and even hardening resistance of American officials to the elementary step of even admitting that that jihad is being waged," Spencer wrote in an article in Front Page Magazine.

Shahzad's attempted attack comes nearly a month after two suicide bombers exploded themselves in a Russian subway, killing more than three dozen people.

Last week, leaders of the Russian Orthodox Church urged the Council of Europe to place a ban on acts of extremism, equating the phenomena with Nazism.

"Nazism and pseudo-religious extremism are phenomena of the same category. Many countries of the world, including Russia, have prohibited the propaganda of Nazism and its symbols, and the same should be done about pseudo-religious extremism, if it justifies coup de force, not to mention civilians killing," Father Vsevolod Chaplin told reporters last Thursday, according to Interfax.

Earlier in the week, some 250 Buddhist, Christian, Hindu, Jewish, and Muslim leaders meeting in Azerbaijan issued a joint declaration condemning extremism, saying that communities of faith are "duty bound" to prevent such acts.

"People who sow death and destruction attempt to use religious slogans to conceal their objectives," the group's statement read. "In present conditions, the cooperation of traditional religious communities becomes more and more vital."

"The responsibility for the future of the world motivates us to declare together that compromises in the choice between sin and goodness are inadmissible and to stand together against egoism, violence and enmity."