U.S.border agents arrested seven Mexican soldiers who strayed across the border in Arizona Friday morning.

The U.S. Border Patrol received reports of a Humvee driving north along the Colorado River near Yuma and U.S. Customs sent a helicopter to investigate, the Arizona Star in Tucson reported. The soldiers told the border patrol they got disoriented and took a wrong turn.

The soldiers were disarmed and taken into custody without incident, the Arizona Star said. They were returned to Mexico via San Luis after a background check.

This is the second incursion across the Arizona-Mexico border in three months, according to the newspaper. In August, four men dressed in military uniforms held a U.S. border agent at gunpoint north of the border, 85 miles from Tucson.

Click here for more from the Arizona Star.