A train sounded its horn moments before a collision with a car in Invercargill which left a person seriously injured, a witness said.
A police spokeswoman said officers were called to reports of a train colliding with a car at the crossing at Renfrew St, Grasmere, about 3.40pm yesterday.

The black Mazda Atenza sedan was shunted about 50m by the force of the impact.
A booster seat removed from the car was visible at the side of the train tracks as emergency services worked.