SNIPER John Allen Muhammad refused to utter any last words as he was executed, taking to the grave answers about why and how he plotted the killings of 10 people that terrorised the Washington DC area for three weeks in October 2002.

A man who killed a store owner by sawing at his neck with a pocket-knife during a 1997 robbery has been executed in Virginia.

AN American who pleaded guilty to killing three neighbours in a long-running dispute over a shared driveway was executed in Jarratt, Virginia.

A Pakistani man who killed two CIA employees in a 1993 shooting rampage outside the agency’s US headquarters has been executed as the government warned of global retaliation against Americans.