US officials said America had captured a suspected ringleader of the 2012 attack on the US diplomatic compound in Benghazi, Libya, that killed four Americans including the US ambassador and ignited a political firestorm in Washington.
"Since the deadly attacks on our facilities in Benghazi, I have made it a priority to find and bring to justice those responsible for the deaths of four brave Americans," he said in a statement.
President Barack Obama said in a statement he had authorised the operation in Libya on Sunday, in which US special operations forces captured Ahmed Abu Khatallah.
He later told an audience in Pittsburgh that Khatallah was being transported to the United States.
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Detectives in Westminster are investigating after the man was discovered on the Route 189 bus in Marylebone shortly after midnight.
The murderer was shaking and appeared to be gasping for air for around 13 minutes before dying.
The positive results come after Chancellor Philip Hammond admitted the government is prepared to sell its stake at a loss to the taxpayer.