COPS probing the crash death of Harry Dunn are to travel to the US to quiz the suspect, his family has been told.
A source close to the probe said that officers will confirm today that diplomat’s wife Anne Sacoolas, 42, will be spoken to in America.
It comes as it emerged America told the UK that a suspect involved in the death of 19-year-old Harry Dunn would leave the country two days before she left – but Britain’s objection had no effect.
Foreign Secretary Dominic Raab told the House of Commons his department was told Anne Sacoolas – the wife of a US spy – would be taken out of the UK.
But their attempts to have her stay for “justice to be done” were unsuccessful.
A source told Sky News: "The chief constable will speak to the press later and confirm that officers will visit the US and conduct an interview with the suspect."
Dunn family lawyer Radd Seiger said Mr Raab told Harry’s parents Charlotte Charles and Tim Dunn that it was for the police to keep them appraised with the investigation.
However, Northants’ chief constable Nick Adderley told them yesterday he could not answer questions.
Mr Seiger said: “The family are angry tonight . . . probably angrier than at any stage in this entire process.”
Mr Dunn, 19, died when his motorbike collided with a car outside RAF Croughton on August 27.
The family are angry tonight . . . probably angrier than at any stage in this entire process.
Dun family lawyer Radd Seiger
Signs have now been placed there which say “drive on the left”.
His parents Charlotte Charles and Tim Dunn went to the United States in a bid to secure the extradition of Ms Sacoolas and event met Donald Trump.
They appeared on This Morning to say they had been "lied" throughout their battle for justice for their boy.
Mr Raab said UK cops were unable to legally prevent Mrs Sacoolas from leaving.
But he said the government’s position was Mrs Sacoolas’ immunity ended when she left the UK.
Mr Raab said: “I have already commissioned a review of the immunity arrangements for US personnel and their families at Croughton.
“As this case has demonstrated, I do not believe the current arrangements are right and the review will look at how we can make sure that the arrangements at Croughton cannot be used in this way again.”
He added the Foreign Office “were informed by the US Embassy that they would not waive immunity, and that the individual would be leaving the country imminently unless the UK had strong objections.
“We duly and immediately objected in clear and strong terms and we have done ever since.”
Shadow foreign secretary Emily Thornberry asked why it took so long for the family to be informed that suspect Anne Sacoolas had returned to the US.
She also demanded he explain why his department asked Northamptonshire Police to delay informing Harry Dunn’s family of the departure of Mrs Sacoolas for “a day or two”.
“The reason we asked for a little bit of time - and this was a request not made by me, I wasn’t aware of it, but by my officials - was to make sure we’d be very clear on what the next course of action would be.”
Mr Raab said the case was now with the CPS and said he had committed to fight for justice for the family.
He also said he and others – including Prime Minister Boris Johnson – have raised the case “at every level” of the US government – including with President Donald Trump.
But the Dunn family lawyer Rudd Seiger told Sky News Mr Raab’s statement added insult to injury and said Mrs Sacoolas did not have immunity at all.
He also said Mr Raab had the chance to take the families through the timeline he presented to Parliament and did not – which is why they went to the US.
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The Dunn family position is that she did not have diplomatic immunity because her husband was not a diplomat and no diplomatic work was taking place at RAF Croughton.
Mr Seiger said “nobody wants to go to the courts” but that they have lawyers ready to go “on both sides of the Atlantic” because of their frustration with the current results of their efforts.
It comes after Mr Dunn’s parents cancelled a meeting with the chief constable of Northamptonshire Police after they realised he would not be answering “a series of key questions”.