A car has crashed through a paddock and into a building near Christchurch this evening.

The male driver was out of the car and was in a moderate condition, a police spokeswoman said.

The crash is suspected to be due to a possible medical event.

The man was driving through Rolleston when his car went through the paddock and hit the building around Main South Road and Robinsons Rd.

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The crash happened about 6pm.

A tow truck has been called to the scene.