A driver suspected of causing serious injury to a teenage boy is now in police custody.
The 14-year-old pedestrian was taken to Bristol’s Southmead Hospital in a critical condition following the crash on Akers Way opposite Nova Hreod Academy at around 8.20am on Friday morning.
The driver of the vehicle involved in the serious collision did not stop and left the scene, Wiltshire Police said.
After investigating throughout the morning, officers have now arrested a woman suspected of causing serious injury by dangerous driving.
She is currently in custody at Gablecross for questioning.
A Wiltshire Police spokesman added: “We are continuing to appeal for witnesses to the collision – if you were in Akers Way this morning and have any information that could help, please call 101 quoting log number 67 of November 25.”
The road has been closed for most of the day while police investigate the area.