A man is on trial this week for allegedly assaulting his 15-year-old stepdaughter's rapist.
Jason Haward was convicted of raping the girl at Paraparaumu Beach last year and was sentenced to seven years' jail last week, Fairfax reported.
On Wednesday, the Wellington District Court was told that the victim's stepfather saw Haward walking down a road in Paraparaumu after the crime.
The court heard that the man leaped from his car and punched Haward repeatedly in the head and face, and head-butted him.
Haward was concussed and lost a tooth.