Officers said two teenagers were arguing when the man tried to intervene and was shot multiple times. He later died at the hospital.
Two children, ages 4 and 13, are dead and two others are in critical condition after being fatally shot at a truck stop near Angleton, Texas, officials said.
A 16-year-old student was believed to be "radicalized by some extremist network," officials with the local sheriff's office said.
A man has been charged with murder in the shooting of a Houston boy who police said was playing a door-knocking prank on a neighbor's home.
As Minneapolis public schools are set to start the first day of classes, police confirm three more children were injured in last week's shooting at Annunciation.
The child was taken to the hospital in critical condition and died from his injuries on Sunday.