Eight people are killed and five others injured in a prison riot and shootings at a food shop and a pizzeria in Ciudad Juárez, Chihuahua. Two other premises are set on fire.
At least a dozen vehicles are burned and several streets are blocked in the state of Baja California, mainly in the cities of Tijuana, Mexicali and Ensenada. This is the fourth major incident in the last week where arson and blocked streets have been reported.
A mass die-off of fish occurs in the Oder river in Poland. Polish officials call it an "ecological catastrophe" with Prime MinisterMateusz Morawiecki vowing to "punish" those responsible. The public has been warned not to enter the water amid fears of possible contamination.
A man kills a woman and two children at their home in Cetinje, Montenegro, before opening fire in the streets against random civilians, killing seven people and wounding six others. The perpetrator is later killed by an armed citizen.