A USA diplomat's wife who is a suspect in a fatal crash Motorcyclist Harry Dunn, 19, died in a collision with a auto in Northamptonshire, on 27 August.
Mr Johnson told reporters on Monday, 7 October: "I do not think that it can be right to use the process of diplomatic immunity for this type of goal".
Expressing sympathy with the household, he persevered: 'That may perhaps well perhaps well perhaps be some extent that we are raising this day with the American ambassador and I hope this would be resolved very rapidly.
The PM's spokesman said: "The details of this case are extremely concerning and the Foreign Secretary has discussed it with the United States ambassador".
"Harry Dunn's family deserve justice", she added, "and in order to achieve this, a full and thorough investigation, with the assistance of all parties involved, needs to take place".
"The Prime Minister offers his condolences to the Dunn family - this was a tragic set of events that no family should have to experience". Charles said. She added that the woman left for the USA just after her son Harry's funeral. "The U.S. Embassy has been and will continue to be in close contact with appropriate British officials".
Ms Charles said she feared her son's death would be "swept under the carpet". "Please help us. We won't be able to grieve and move on and try put the pieces of our shattered lives together until we get justice for Harry".
Mrs Charles said Ms Sacoolas had "left a family in complete ruin", adding: "We're broken".
But then police learned the driver would be claiming diplomatic immunity, and they made an immediate waiver request to the US Embassy in London, a spokeswoman told The Post.
The State Department said in an emailed statement to NPR on Monday that questions about waiving immunity for its diplomats and their family members overseas "are considered carefully given the global impact such decisions carry; immunity is rarely waived". "We will do what we can to bring her back", she said. She's a mother and I'm sure she knows how she would feel if it was one of her children who came to harm.