After the couple was mysteriously found dead, Trevor Ault has details on officials revealing Gene Hackman died of heart disease and Alzheimer's, while his wife died of hantavirus – a rare disease transmitted by mice; Steve Osunsami has the latest on the South Carolina man, who was convicted for murdering his ex-girlfriend's parents, becoming the first person to be executed by firing squad in 15 years; Pierre Thomas reports on the two active duty soldiers and an Army veteran accused by the FBI of stealing sensitive military and national defense secrets and selling them to China; and more on tonight's broadcast of World News Tonight with David Muir.

Ike Ejiochi has details on the small plane that crashed into a parking lot in southern Pennsylvania with 5 people on board; Morgan Norwood reports on the efforts to contain fast-moving wildfires that erupted in eastern Long Island, scorching more than 600 acres near the Hamptons; Perry Russom has the latest on the 20-year-old University of Pittsburgh student who went missing while on a spring break trip in the Dominican Republic; and more on tonight's broadcast of World News Tonight.