Tim Dunn and Charlotte Charles, parents of Harry Dunn, leave the Foreign and Commonwealth office in London, Britain, October 9, 2019.
Tim Dunn and Charlotte Charles, parents of Harry Dunn, leave the Foreign and Commonwealth office in London, Britain, October 9, 2019.

Parents of the British teen killed when his motorcycle collided with car allegedly driven by an American diplomat's wife are on their way to the U.S. hoping to seek justice.

Harry Dunn, 19, died in August in near the Croughton Royal Air Force base in Northhamptonshire, which is used by the U.S. Air Force as a communications center.

Dunn's mother, Charlotte Charles, told the BBC the family hopes to meet with the suspected driver, identified by British police and Prime Minister Boris Johnson as Anne Sacoolas, wife of an American intelligence officer based at Croughton.

Sacoolas claimed diplomatic immunity and returned to the United States while the case was still being investigated. She has since written a letter of apology to Dunn's family.

But Charles said Sunday, "It's nearly seven weeks now since we lost our boy, sorry just doesn't cut it.

"That's not really quite enough," she told Sky News. "But I'm still really open to meeting her, as are the rest of us. I can't promise what I would or wouldn't say, but I certainly wouldn't be aggressive."

Charles also said the family was thankful to receive a letter Saturday from the Foreign Secretary Dominic Raab that said since Sacoolas had left Britain, "immunity is no longer pertinent''.

The family is hoping Sacoolas will return to Britain.  They have even called on U.S. President Donald Trump to intervene on their behalf.

But Trump told a news conference Wednesday that Sacoolas would not return. Harry Dunn's death was a "terrible accident," the president said but he noted that driving on the worn side of the road "happens".