On June 23, Bradley Scott Sayer, 18, killed two patrons at the Chico, California public library after scouting the venue in advance and arriving in a Columbine reference shirt; he was arrested within four minutes.

Six people killed and 30 more wounded across Chicago during Juneteenth weekend, with a drive-by targeting a South Side holiday gathering accounting for the single largest episode at 13 wounded.

A 22-year-old suspect is at large after a June 17 shooting on Kansas City interstates killed one person and injured four others, including an Uber driver near a FIFA World Cup venue.

Retired firefighter Eric Franks shot three Philadelphia officers processing a crime scene in Wynnefield on June 13; all three are expected to survive and Franks was killed by return fire.

Pierce County reduced bail for Foss High School mass stabbing suspect Waleed Essakhi, 16, from $750,000 to $250 on June 8 on the basis of new self-defense evidence; he was released to home monitoring with conditions prohibiting contact with any Tacoma Public School.

An armed suspect with a long rifle and explosives has been barricaded since midday June 9 in a south Minneapolis apartment after firing on Hennepin County deputies, shooting down a police drone, and releasing two hostages; FBI and ATF are on scene with the standoff ongoing.