Two people are killed and another is injured in a mass shooting in Vancouver, Canada.
A mass shooting at a nightclub in Salamanca, Guanajuato, Mexico, kills at least 15 people and leaves another seven people wounded.
A man opens fire in a tram in the city of Utrecht, Netherlands, killing three people and injuring nine others. According to mayor Jan van Zanen, a "terror motive" was the most plausible reason for the attack.
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.
A mass shooting inside a nightclub in Cancún, Mexico, leaves five dead and five wounded.
Ten people are injured in a mass shooting in Manchester, United Kingdom.