Tokyo, July 7 -- Two U.S. servicemen have been arrested in the southernmost Japan prefecture of Okinawa over the weekend for allegedly assaulting Japanese nationals, local media reported Monday.

The Okinawa police on Saturday arrested Tomas Salazar, who belongs to the U.S. Air Force's Kadena base in the prefecture, on suspicion of assaulting his girlfriend at a parking lot, Jiji Press reported.

The 25-year-old airman allegedly knocked down the woman in her 20s and punched her in the face several times at around 3:30 a.m. local time Saturday, causing an injury to her mouth, but he has denied the allegations, the report said.

The prefectural police also arrested Gabriel Monize, a 21-year-old private 1st class who belongs to the U.S. Marine...