Police have seized a vehicle they believe may have a struck a teenager in NSW.

The boy was found injured on the side of a road on Wednesday and taken to hospital with abrasions to his leg and face.

No charges have been laid, but a man in his 60s is assisting police.

Police think the boy was struck crossing the road after getting of his school bus. Picture: NCA NewsWire / Gaye Gerard. 

About 4pm on Wednesday a 13-year-old boy hopped off his school bus in Bowral in the NSW Southern Highlands.

Some time later he was found injured on the side of Isabella Way.

He was taken to Liverpool Hospital with non life-threatening injuries.

Police will forensically examine the car. Picture: NCA NewsWire / Gaye Gerard 

At a nearby home, police seized a white SUV. The car will now be forensically examined.

A 63-year-old man is assisting police; however, no charges have been laid and the investigation is ongoing.

Police want anyone with information to contact Crime Stoppers.