LONDON (REUTERS) - Britain has sent an extradition request for the wife of a US diplomat who left the country last year after a road collision that killed 19-year-old Briton Harry Dunn, a spokesman for the UK interior ministry said on Friday (Jan 10).

British prosecutors are seeking the extradition of Anne Sacoolas over the crash last August in which Dunn was killed while riding his motorbike.

"Following the Crown Prosecution Service's charging decision, the Home Office has sent an extradition request to the United States for Anne Sacoolas on charges of causing death by dangerous driving," a Home Office spokesman said in a statement.

"This is now a decision for the US authorities."

Sacoolas, 42, was given diplomatic immunity and left Britain shortly after the accident.

Her lawyer has said that she would not return voluntarily to Britain to possibly face jail for "a terrible but unintentional accident."

Dunn's family has said that Sacoolas, 42, was driving on the wrong side of the road at the time of the crash near an air force base in central England that is used by the US military.

British Prime Minister Boris Johnson has said Sacoolas was wrong to use diplomatic immunity to leave Britain and has urged US President Donald Trump to reconsider the U.S. position.

Dunn's parents met Trump at the White House in October.

Trump hoped to persuade them meet to Sacoolas, who was in the building at the same time, but they declined.