Campinas massacre
Around 23:50 BRST on 31 December 2016 (1:50 GMT on 1 January 2017), a man named Sidnei Araujo entered a home where a New Year's party was taking place and opened fire at the gathering with a Walther P5 9mm semi-automatic handgun. Araujo killed 12 people, including his estranged wife and his eight-year-old son, and wounded three others before committing suicide by shooting himself.