The six-year-old boy suffered serious abdominal injuries in the accident which occurred about 3.30pm on Tuesday.

A spokesperson for the Westpac Rescue Helicopter said the injuries were suffered after a reported fall from the back of a ute.

The boy was rushed to Guyra hospital where the chopper was deployed to.

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The critical care team on board the helicopter stablised the boy before he was flown to John Hunter Hospital in Newcastle in a serious condition.

Meanwhile, a cyclist has been treated in hospital after being hit by a car in South Tamworth.

The accident happened shortly after 9.30am on Tuesday at the intersection of Diane and Kent Street.

Ambulance NSW said paramedics treated a man in his twenties who had fallen from a bike.

He suffered injuries to his ankle and arm and was taken to Tamworth hospital in a stable condition.

Investigations into the crash are continuing, police said.