Los Angeles - Two US Marines have been arrested for smuggling undocumented Mexican migrants into the United States in exchange for money, according to a court document.

Byron Darnell Law II and David Javier Salazar-Quintero were arrested on July 3 along the Mexican border in Jacumba, California, the document said. They were charged with having transported three undocumented migrants about six miles (10 kilometers) over the border.

The three Mexican nationals seated in the back of the Marines’ vehicle were prepared to pay $8,000 “to be smuggled into the United States,” although it is unclear to whom they would have paid the money.

The two Marines, who were stationed at Camp Pendleton near San Diego, have been accused of “knowingly” transporting the migrants into the US “for the purpose of... private financial gain,” according to the court document.