U.S. Customs and Border Protection officers stopped several smuggling attempts during the last several days, the agency said Friday.

The incidents were:

• A 40-year-old Mexican national and an 18-year-old Tucson woman were arrested Thursday in connection with separate attempts to smuggle drugs through the Port of Douglas.

CBP officers arrested Jorge Enrique Diaz-Lopez after a drug dog alerted to eight packages of heroin hidden under the back seat of his truck, the agency said in a news release.

The 18 pounds of drugs have an estimated value of $244,000.

Also, the 18-year-old woman was arrested after officers found 137 packages of marijuana hidden in the Lincoln sedan she was driving. The drugs, weighing 147 pounds with an estimated value of $66,290, were hidden in several places.

• In a separate case, a Tucson man was arrested Thursday at the Nogales port of entry on suspicion of attempting to smuggle about 13 pounds of methamphetamine and nearly 3 pounds of cocaine into the United States.

CBP officers sent the man, 26, for an additional inspection of his Honda coupe when he attempted to cross, the agency said.

A CBP dog alerted to drugs beneath the floor of the vehicle. Officers removed two packages of cocaine and 12 packages of methamphetamine. Combined, the drugs had an estimated value of $225,214.