On Nov. 29, at approximately 2:10 p.m., an ISP trooper conducted a commercial motor vehicle inspection on a Volvo truck-tractor semi-trailer combination on Interstate 80 eastbound in Henry County.

CHICAGO (CBS) -- Two people from Canada have been arrested on drug charges, after Illinois State Police seized more than $40 million worth of cocaine from a semi-trailer truck near the Iowa state line on Friday. Police said, around 2:10 p.m., a trooper conducted a vehicle inspection on a Volvo semi-trailer on Interstate 80 in Henry County.

The largest drug seizure in Illinois history took place last week when police seized over 1,000 pounds of cocaine and arrested two Canadians during a traffic stop