Police are still investigating an attack on Kelvin Wackrow, 75, in Inglewood last week.
Mr Wackrow's 16-year-old assailant allegedly pushed him up against a fence and punched him repeatedly in the face.
Mr Wackrow was taken to hospital where he received seven stitches to his eye.
The teenager is expected to be dealt with through youth aid, police said.
Taranaki Daily News