U.S. Border Patrol agents were busy in Arizona as they stopped several attempts at people attempting to smuggle drugs into the country.

A 47-year-old woman was caught trying to smuggle heroin in from Mexico into the United States while using the pedestrian lanes.

The woman was flagged and referred for further inspection by the US Customs and Border Protection officers at the Port of Nogales Dennis DeConcini.

They found her in possession of nearly 3 pounds of heroin worth more than $45,000.

Where it was hidden though, left officials puzzled.

The woman had the drugs strapped to her buttocks underneath her jeans.

By the end of the day, authorities at the port had seized a combined 68 pounds of methamphetamine, cocaine, and heroin worth more than $410,000.

Earlier that day, officers discovered nearly 22 pounds of meth, worth $65,000 in the panels of a Ford SUV driven by a 38-year-old woman from Peoria, Arizona when she was on her way in from Mexico.

Shortly after, agents referred a 40-year-old Mexican man for closer inspection of his Nissan sedan and discovered more than 31 pounds of meth and 2.5 pounds of cocaine hidden in the vehicle's floor. The total value of the drugs reached $123,000 combined.

Finally, a 26-year-old woman from Rio Rico, Arizona was stopped and searched. They found more than 10 pounds of heroin worth more than $178,000 in the back seat of her Honda sedan.

All 4 individuals were arrested and turned over to US Immigration and Customs Enforcement's Homeland Security Investigations.