“A family has lost a 12-year-old boy in an appalling incident and our thoughts remain with them,” said Sgt Rich Evans.
“We are offering them support at this most dreadful of times, and we’re keeping them informed as our work to trace those responsible goes on.”
Sgt Evans urged those involved in the crash, or anyone who knows them, to search their consciences and “do the right thing”.
Police are continuing to check CCTV from the area around the crash, and are appealing for any other witnesses to get in touch, particularly if they had dashcam or doorbell footage.
An online fundraiser to support Keaton’s family had raised more than £31,000 by Sunday morning.