Officials with U.S. Customs and Border Protection say a man caught smuggling more than 40 kilograms ecstasy across the Michigan-Ontario border co-operated with agents to arrest the men waiting for the delivery.

Officers with the U.S. Customs Border Patrol claim they seized more than 40 kilograms of ecstasy from a man who tried to smuggle the drug across the U.S.-Canada border from Windsor, Ont. (CBC)

The man was caught Tuesday afternoon driving an empty car carrier across the Ambassador Bridge from Windsor, Ont., to Detroit., according to an affidavit filed Wednesday in a federal court in Detroit.

A U.S. CBP officer searched the vehicle's cab and found three duffel bags containing the ecstasy, Anthony Romolino, a senior special agent with Immigration and Customs Enforcement said in the affidavit.

The driver then agreed to help officials and drove on to a truck stop in Monroe County, where three people arrived for the delivery and were arrested, Romalino said.

This is the second publicized ecstasy bust involving the U.S.-Canada border in less than two weeks.

On Oct. 28, CBP officers arrested a woman from Brampton, Ont., they say was trying to smuggle more than 10,000 tabs of the illicit drug across the border at the Lewiston Bridge in Niagara Falls.

The 47-year-old woman had sewn 11 vacuum-sealed bags of tablets into the inner lining of her jacket, according to a CBP press release.

The CBP typically seizes 3,400 kilograms of narcotics per day.