British police investigating the death of Harry Dunn have interviewed suspect Anne Sacoolas in the US.
Superintendent Sarah Johnson of Northamptonshire Police confirmed details of the interview would be passed on to the Crown Prosecution Service for consideration.
Anne Sacoolas, the wife of a US diplomat, is believed to have been driving on the wrong side of the road when her car hit and killed Mr Dunn, 19, outside RAF Croughton on 27 August.
The 42-year-old claimed diplomatic immunity after the fatal crash and later left the UK.
Mr Dunn's mother, Charlotte Charles, told Sky News that the family felt they were "no further forward" and were still "left in limbo".
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She also criticised the decision to fly British police to the US.
"We don't even really understand why the police flew to see her as per her request," she said.
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"Why should our UK taxpayers be funding the police to go to the States when ideally she should really be coming back here?"
It was announced last week that Mrs Sacoolas would be interviewed under caution by Northamptonshire Police officers in her home country.
Chief Constable Nick Adderley said at the time: "The suspect has cooperated fully with police and authorities and requested to be interviewed under caution in the US.
"She did not want to provide a pre-prepared statement, as is her right."
If a suspect is interviewed under caution, this means they have the right not to answer questions they do not want to, but anything they say can be used in a legal case.
The Dunn family has called for Mr Adderley's resignation following an "outrageous" comment he made about the case on social media.
Responding to a tweet about how the family could be taking legal action against Ms Sacoolas and the Trump administration, Mr Adderley wrote: "How sad but how predictable!!"
In a statement given to Sky News, the family called the comment "outrageous and absurd".
They said: "He cannot continue in his job and we are calling on him to resign immediately for the good of our case and for the good of the people of Northamptonshire who should be able to rely on their head of police for impartiality and fairness.
"We have said numerous times that we have felt totally unsupported by Northants Police and not been kept updated on progress of the case in accordance with our rights under the victims' code."
Mr Adderley said he meant "no offence" by the tweet and apologised if it had been "misconstrued or misrepresented".
"The tweet was in reference to the profound sadness at the loss of Harry Dunn, that the spokesperson for the family has been absolutely clear on the next steps in fighting for justice for Harry and that the only recourse to justice that they feel they have available to them at the moment is through the US civil court system," he said.
Northamptonshire's police, fire and crime commissioner Stephen Mold told Sky News he had spoken to Mr AdderlRead More – Source
