Nogales port officers seized five military-style rifles, two handguns and ammunition from a man heading into Mexico on Nov. 14, 2017.

Customs and Border Protection

An 18-year-old man was arrested Tuesday evening after CBP officers in Nogales found seven guns and ammunition hidden in a vehicle headed into Mexico.

Offiers at the Mariposa crossing selected the man for an outbound inspection of his Chevrolet sedan. There, they found five military-style rifles, two handguns and more than 800 rounds of ammunition hidden under the seats, according to a news release from Customs and Border Protection.

The man was arrested on suspicion of gun trafficking and turned over to U.S. Immigration and Customs Enforcement's Homeland Security Investigations. The car, guns and ammo were seized, CBP said.