A school shooting at Saugus High School in Santa Clarita, California, injures five students, two fatally. The 16-year-old gunman, identified as Nathaniel Berhow, shoots himself, is hospitalized, and dies a day later.
A mass shooting occurs at a bar in the Oregon Historic District of Dayton, Ohio, United States. Nine people are killed and at least 27 others are injured. The shooter Connor Betts is killed by police.
At least 22 people are killed and 24 others injured in a mass shooting at a Walmart in El Paso, Texas. A suspect Patrick Crusius of Allen, Texas was captured alive. The case is being investigated as domestic terrorism given that Patrick Crusius had posted a 4-page white nationalist manifesto titled "The Inconvenient Truth" on 8chan where he cited a supposed "Hispanic invasion of Texas" and "Simply trying to defend my country from cultural and ethnic replacement" as motivation for the shooting.
A man opens fire in a tram in the city of Utrecht, Netherlands, killing three people and injuring nine others, before fleeing. Terrorism is suspected by authorities. A 37-year-old Turkish man is arrested.
Prosecutors in Northern Ireland charge a former British Army soldier with murdering two people during the mass shooting in Derry during the Troubles in 1972, following a contemporary police investigation. The man, known only as Soldier F, is also charged with three attempted murders. It is also announced that no other charges against either soldiers or civilians will be brought due to insufficient evidence. Soldiers shot 28 unarmed protestors, killing 13.