Carrot River RCMP are on the scene of a serious single vehicle rollover about three hours northeast of Saskatoon.

The rollover occurred about 24 kilometres north of the junction of Highways 123 and 55, north of Carrot River.

Highway 123 is closed to traffic on Tuesday afternoon and will remain that way for several hours while the investigation continues.

STARS Air Ambulance was also called in for patient transport.