A 27-year-old man from Aylesbury has been arrested on suspicion of causing death by dangerous driving.
The arrest relates to the crash on the A413 last week which killed Thomas Fremantle School pupil Jeremy Tombs, 13.
On Sunday 4 October at around 3.30pm, a car travelling southbound, collided with a car travelling northbound on the road between Weedon and Aylesbury.
The driver of the blue Vauxhall Corsa, a woman thought to be Jeremy’s mother, was seriously injured. Jeremy, who was a passenger in the car, died at the scene.
The driver of the other vehicle, a grey VW Golf has been arrested.
If you have any information about the collision, please contact PC Julia Stroud from the Serious Collision Investigation Unit via 101.
If you do not want to speak directly to the police you can contact the independent charity Crimestoppers anonymously on 0800 555 111. No personal details are taken, information is not traced or recorded and you will not go to court.