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MIAMI (CBSMiami) – A total of 797 pounds of cocaine were found inside a cargo vessel at the Miami River.

U.S. Customs and Border Protection officers seized the cocaine from a 180-foot cargo vessel on February 27th.

Officers from the port initiated a search of the vessel and identified a compartment inside a ballast tank.

The compartment, according to CPB, was not easy to find as it had been concealed under a layer of concrete.

After drilling the compartment, CPB officers discovered the cocaine.

A total of 310 packages of contraband, worth over $9 million in cocaine, was taken off the vessel.

“Every single day the men and women of Customs and Border Protection work diligently to protect our borders and to prevent the importation of contraband through our ports of entry. Customs and Border Protection at the Port of Miami also works very closely with our law enforcement and security partners to disrupt and ultimately close off pathways through which narcotics are introduced into the United States,” said Diane Sabatino, CBP Miami Seaport Port Director in a press release.