Police investigating the bashing of a Kawakawa vintage railway volunteer are calling on the public to help catch the offenders.
Mike Bradshaw, 78, had popped into the railway workshop about 8.30am on Saturday to feed the station cat when he disturbed a group of youths rifling through the cupboards.
Four of them punched and kicked him to the ground, only fleeing when he was able to reach a shovel to defend himself.
He suffered a black eye, bruising to the ribs and a head laceration but was back to working on the trains on Monday.
He was treated at Bay of Islands Hospital and discharged.