Federal agents made two large methamphetamine busts on the Arizona border:

Border Patrol agents at the checkpoint on Interstate 19 on Monday night arrested one woman and seized nearly 30 pounds of methamphetamine worth more than $460,000, according to a Customs and Border Protection news release.

Agents found 27 packages of meth during the inspection of a Mercury sedan driven by a U.S. citizen. A drug dog alerted agents to the vehicle, leading to the discovery of meth, which was wrapped in clear packaging tape between the back seat and trunk of the vehicle, the release said.

The car and drugs were seized. The driver was arrested.

In a separate incident in Nogales, Ariz., two female Mexican nationals were arrested Saturday for attempting to smuggle about 41 pounds of meth, worth an estimated $635,500, across the border, the CBP said in a separate news release.

CBP officers sent the driver and passenger of a 2006 Jeep Liberty for secondary inspection when the driver tried to cross at the Mariposa Port of Entry. During the inspection, officers found 30 packages of meth in the vehicle’s gas tank.

The drugs and vehicle were seized.

The driver, Rosalinda Salazar-Lopez, 21, and her 19-year-old passenger, were turned over to U.S. Immigration and Customs Enforcement’s Homeland Security Investigations.