Police in the Wairarapa are seeking witnesses to what is believed to be a sexually motivated assault on a 14-year-old girl.
The assault occurred in Masterton's Queen Elizabeth Park adjacent to the swing bridge, about 5pm on Saturday.
A 16-year-old boy has been referred to youth aid in relation to the incident.
Police say the girl appears to have been followed across the bridge before being forced down a bank.
They say an extensive scene examination has been conducted, and enquiries are continuing.
Anyone who was in the vicinity of Queen Elizabeth Park on Saturday afternoon should contact the Masterton police or ring Crimestoppers on 0800-555-111.