"He told hospital staff that he had a gun and that he would shoot anyone who came near him," police said, adding that officers approached the man out of concern for other patients who needed care.

Most Americans first learned about "bump stocks" — which speed up the firing rate of semi-automatic rifles — in the aftermath of the Las Vegas massacre. A year later, they're still mostly legal.

Officers were called to Manhattan's Minskoff Theater on Friday, where they say they found 47-year-old puppet technician Ilya Vett in the process of printing a handgun.

Guyger has said she mistakenly entered the wrong apartment in her complex and shot a man she thought was a burglar. She was later arrested and charged with manslaughter.

An employee at a Rite Aid warehouse opened fire at work Thursday, killing three people before taking her own life, authorities said.

Botham Jean, who was killed by a white police officer earlier this month, was remembered Thursday for his dedication to service, his deep faith, and for having a ready smile and an open heart.

The Dallas police chief says she plans to charge the unnamed officer with manslaughter. The victim, 26-year-old Botham Shem Jean, is being remembered as a devout, joyful man.

Lori Alhadeff's mission is to make all U.S. schools safe, starting with Broward County, Fla. After her daughter was killed in February's mass shooting, politics has become her vehicle for change.

The federal government said schools reported 235 shootings in one school year. But an NPR investigation finds that more than two-thirds of these reported incidents never happened.

The judge says that Defense Distributed can't publish its DIY gun designs online until a court case between the states and the federal government is resolved. But the designs are already circulating.