Leaders from Canada, the United States and Caribbean nations agreed Friday they would not use violence to diffuse Haiti's political crisis.

Foreign Affairs Minister Bill Graham and Caribbean leaders met with U.S. Secretary of State Colin Powell in Washington, D.C., to find a diplomatic solution to the growing rebellion.

Powell there are no plans to pressure President Jean-Bertrand Aristide to resign and warned rebel groups against forcing him out.

"We will accept no outcome that in any way illegally attempts to remove the elected president of Haiti," said Powell.

Powell said Aristide must call off his "thugs" and work with opposition members to end the violence.

"We need him to start taking action to reach out to the opposition to make sure that thugs are not allowed to break up peaceful demonstrations," said Powell.

There are reports that a good deal of the lethal violence in Haiti is being perpetrated by Aristide's gangs.

Caribbean leaders have proposed sending help, including an international police force, while pushing Aristide to accept a sharing of political power. Canada and the U.S. have accepted that plan.

"We are frustrated with the violence, we are frustrated with Aristide," said Graham.

Canada sent police to Haiti nine years ago to help rebuild and train the impoverished country's police force.

Also Friday, the United Nations urged Haiti's government and rebel groups to allow the safe delivery of humanitarian aid. UN officials say 200,000 people in the country are in danger of going hungry after armed rebels siezed the town of Gonaives.