In Colorado, authorities say a heavily armed man died by suicide before carrying out an apparent planned massacre at an amusement park. Police say the body of an unnamed 20-year-old was found Saturday morning at the Glenwood Caverns Adventure Park wearing body armor and tactical gear. He was armed with an AR-style rifle, a semiautomatic handgun and explosive devices.

In Maine, newly surfaced records show police ignored repeated warnings about threats made by the Army reservist behind last week’s mass shooting which left 18 people dead and 13 others injured. In mid-July, an Army commander was told that Robert Card should not have a weapon, handle ammunition or participate in live-fire exercises. The commander alerted local police, but it’s unclear if officers took any action. And just six weeks ago, police records show Card punched a friend and stated that he was planning to “shoot up the drill center” where his Army Reserve unit is based. An officer performed a wellness check on Card but gave up after Card did not come to the door.