Seven-year-old Joshua Taylor and his brother Leon (4) were killed when a Ford Sierra racing with teenage motorcyclist Joshua Knights hit an oncoming Renault Megane.

Sierra driver Kenny Jones (25), his brother Martin (22) and friend Andrew Darnell (21), all from Bolsover, also died, but Knights (18) escaped unscathed and performed wheelies as he left the scene.

Knights was locked up for six-and-a-half years in May after admitting causing death by dangerous driving in the crash on Chesterfield Road, Shuttlewood, last September.

Chesterfield magistrates were told last Wednesday that the Taylor brothers' aunt Sharon Tut flew into a rage and attacked Knights' father Paul Knights when their paths crossed near the crash scene on 29th July.

Prosecutor Becky Mahon said Mr Knights was packing belongings into a hired truck when Tut approached in a vehicle. She was with her sister Pam (32), the mother of the dead brothers.

Mr Knights told police that Tut pulled up, confronted him and swung a baseball bat into his right arm saying 'you killed the kids'.

She then smashed a window on the truck and struck the windscreen and driver's door – constantly calling him a murderer – before her brother-in-law appeared and led the sisters away.

In mitigation, Steve Brint said Mr Knights had given his son a 'souped-up' off-road bike. Police had warned the teenager not to use it a few weeks before the crash, but he ignored them.

"He decided to race a car that had three occupants, with tragic consequences. The car left the road at over 100mph and flew into the car that her sister Pam was driving," said Mr Brint.

"Pam's two young boys were with her a nd they were killed instantly. She is now disabled.

"Three occupants of the car that was being raced were also killed. To make it worse, the rider of the bike started doing wheelies."

Mr Brint told the court Sharon Tut was tidying up the road in preparation for a memorial service when she saw the biker's father.

He added: "She hadn't gone looking for him. She says he had shown no remorse and accepted no responsibility for the death of her two nephews.

"He had bought that bike for his son. It was illegal and shouldn't have been on the road."

Tut (31), of Holly Bank Avenue, Pleasley, admitted assault, possessing an offensive weapon – a rounders bat – and causing £2,000 damage to the truck.

Magistrates said their sentencing powers were insufficient and committed her to be dealt with by a judge at Derby Crown Court on 5th September.

They called for probation service reports and granted her bail on condition she did not contact Mr Knights.

Joshua Knights, of Chesterfield Road, Shuttlewood, was also banned from driving for 10 years at the crown court hearing in May.