Police have surrounded a group of Congolese protesters at the U.S. consulate in downtown Toronto.

More than 150 people have gathered to protest what they call a lack of action regarding elections in Congo.

There are reports from the scene that grass and dirt were thrown at police officers.

A citywide call has been issued to bring in as many officers as possible to keep the situation under control.

More than 30 police cars are on the scene and University Avenue, bwtween Queen and Dundas Streets, is closed in both directions.

Sergeant Craig Somers of the Toronto police said the demonstration "started off very peacefully," with a planned march to the U.S. consulate. He said two members of the march "got a bit out of control" and were arrested.

Protestors are carrying signs saying "Free Congo" and "Respect the will of Congolese people."

More to come