A young man allegedly attempted to steal a ride-on train before pulling a knife on a volunteer worker in a dramatic incident at the miniature railway in Napier's Anderson Park.
Police said they were alerted to an incident on Kennedy Rd about 1.30pm on Sunday.
A youth, who had earlier been seen riding a miniature train at the park, was reported to have presented a knife before fleeing from the area, a police spokesperson said.
Hawkes Bay Model Engineering Society Secretary and Treasurer Norm McPhee said no damage was done to the ride-on miniature railway, which is run by a group of volunteers, or the worker.
"I think it was a spur of the moment thing," he said of the heist attempt. "The police came and took a statement and got a copy of the photos that were taken.