The Canada Border Services Agency said it seized 30 kg of what they believe is cocaine at the Ambassador Bridge earlier this month.
Border guards found it inside a commercial truck entering Canada on August 1. During a secondary inspection, they found 28 bricks of cocaine hidden in a duffle bag.
"The CBSA is Canada's front line," said Public Safety Minister Marco Mendicino. "Seizures like this are clear signs that our efforts to prevent crime and keep illegal contraband off our streets are working."
The Royal Canadian Mounted Police arrested the driver and a passenger and seized the evidence.
Two men from Winnipeg, Manitoba, aged 50 and 31, face importing and trafficking cocaine charges. They'll appear in a Windsor court on September 19.
The investigation is ongoing.