The shooting, at a center for adult education in the city of Orebro, was the worst mass shooting in Swedish history, the country’s prime minister said.

Officials have positively identified 66 of the 67 people killed in Wednesday's midair collision between an American Airlines passenger jet and a military helicopter over the Potomac River in Washington, D.C.

A gunman opened fire Tuesday in an adult education center, leaving about 10 people, including the gunman, dead in what Sweden’s prime minister called the country’s worst mass shooting. A final death toll, a conclusive number of wounded, and a motive hadn’t yet been determined hours later.