A car parked at a U.S. Marine Corp base in Okinawa has been damaged by a bullet, according to the Defense Ministry and local officials.

The car, owned by a Japanese construction worker, was parked at the Afuso Dam site at Camp Hansen in the village of Onna. It was found damaged at around 6 p.m. Thursday, with a bullet found nearby. The type of bullet was not specified.

The incident prompted the Defense Ministry's Okinawa bureau to lodge a protest with the U.S. military, urging it to take preventive measures to ensure the safety of citizens working there. Live-fire exercises are carried out at the base.

It is the second bullet-related incident since April 6, when a water tank at the site was found broken at around 2:30 p.m. A bullet was found inside the tank.