The school bus rolled and came to rest in a paddock after the crash.

Women comfort each other as a child from the school bus crash is lifted on to a stretcher by fire fighters and St John paramedics.

The scene after the crash between a school bus and a car in nelson.

One person is seriously injured following a crash between a school bus and a car in Nelson this morning.

Did you witness the bus crash in Wakefield? Send your stories, photos and video footage to: chiefreporter@nelsonmail.co.nz or phone 03 546 2881.

Senior sergeant Murray Hearst, of the southern police communications centre, said the bus overturned on the main road in Wakefield, south of Nelson, just after 8am.

The bus was transporting two Wakefield children, aged 11 and 12, to the Nelson Christian Academy in Stoke when the crash happened.

It had rolled through a fence, coming to rest in a paddock.

The two children on the bus had been trapped, but were freed by fire officers. They were shaken but not badly injured, an ambulance spokeswoman said.

The female driver of the car had to be cut from her vehicle and was taken to Nelson Hospital, where she was reported to be in a serious condition.

The two children would also be taken to hospital for a check-up.