In Ostrava, Czech Republic, a man opens fire in a hospital's waiting room, killing seven people before fleeing, then shooting himself dead.
A gunman opens fire near the French embassy in Dar es Salaam, Tanzania, killing three policemen and an employee of a private security company, and wounding six other people. The gunman was shot dead by responding security forces.
Incumbent Miloš Zeman, who opposes immigration and objects to EU sanctions against Russia, is elected to a second term as President of the Czech Republic, after receiving 51.8 percent of the votes in the run-off election over pro-EU challenger Jiří Drahoš.
A mass shooting takes place at Accent Signage Systems, a sign company in Minneapolis, Minnesota, United States; five people are killed, including the gunman who committed suicide, and four others are wounded.