Police tonight arrested an 18-year-old man for investigation of trying to extort an auto part from a man in Waimanalo.

The suspect was arrested at 6:23 p.m. at Kuhimana and Piohia streets in Waimanalo and booked for second-degree extortion, first-degree unauthorized entry into a motor vehicle and fourth-degree criminal property damage.

According to police, a 20-year-old male complainant reported the suspect has been using threats of force to obtain a car part from him for about a week and was also demanding money if he did not comply. The suspect confronted the complainant yesterday and allegedly assaulted him while he was seated in his father's truck.

The suspect also damaged the truck.