An 18-year-old man was arrested yesterday as a suspect in the Aug. 1 beating of a 20 year-old man in Mililani.

The older man told police he was hit from behind about 11:30 p.m. at an unspecified location by the suspect, who was wearing brass knuckles.
Police said the man who filed the complaint was hit several times and was seriously injured in the incident.
A vehicle belonging to the complainant was also damaged , police said.
The suspect in the case was contacted yesterday and turned himself in at the Wahiawa Police Station.
He was booked on suspicion of first-degree assault, use of a deadly weapon and third-degree criminal property damage.
He was released from custody pending further investigation.