Heat is being blamed for a freight train rolling off tracks in the central North Island this afternoon.
Five freight wagons came off the tracks just outside of National Park station around 4pm today.
Part of the train blocked the Fisher Rd level crossing, disrupting freight services on the main trunk line.
KiwiRail says when temperatures get too hot, the tracks can buckle.
Emergency services were at the scene and no injuries have been reported.
"As I was watching [the freight train], it began topple over," an eyewitness who was standing on the station platform told RadioLIVE. "Then I thought, 'nah, this isn't actually happening', and the freight train just rolled over like a car."
He says he could smell gas coming from the refrigerated wagons.
KiwiRail is now working to clear the site.