Abubakr Ben Yusaf and Umar Ben Yusaf were racing near Welshpool, Powys, in November 2024.
Young John Mongan died despite what the police called "the best efforts of paramedics".
A 22-year-old has been held on suspicion of murder and remains in police custody.
Abubakr Ben Yusaf and Umar Ben Yusaf were found guilty of killing a father-of-two and seriously injuring his nine-year-old son.
Rhys Jenkins died at the scene of the crash, while his son Ioan was airlifted to hospital.
Rhys Jenkins died at the scene of the crash, while his son, Ioan, was airlifted to hospital with serious injuries.
Two brothers were racing before crash that killed a father and injured his son, a court is told.
A wine merchant says he is concerned about the extra costs and administrative burden on businesses.
Stephen Doughty assaulted Wendy Williams after struggling to use a pay-and-display machine.
