Nuclear experts said the images could indicate progress in miniaturising warheads that are powerful yet small enough to mount on intercontinental ballistic missiles capable of striking the United States.
Michael Mastin, 57, was arrested and charged with two counts of criminal damage to a critical infrastructure and two counts of contaminating water supplies.
Rebecca Payne, 43, was found guilty of killing her husband, Noel Payne, 68, after lacing his favorite lemon cookies with sleeping pills before stuffing him in a freezer in 2020.