TORONTO - The US pastor known for burning Korans and inciting unrest in the Middle East was barred on Thursday from entering Canada, where he was set to attend a potentially divisive debate with a imam, Canadian media reports said.

Terry Jones was blocked at the US-Canada border in Windsor, Ontario, because of a previous legal infraction in the United States and because the German government has issued a complaint against him, the Canadian Broadcasting Corp said.

Jones told the CBC that he would seek legal counsel on whether to appeal what he said was a "grievous act" against free speech.

"We are going to head back to Florida now and we are going to check whether we are going to appeal that," he said.