Fred Guttenberg, the father of Jaime Guttenberg who was killed during the shooting at Marjory Stoneman Douglas High School in ...

The tracker focuses on the segment of planned school shootings where an active shooter, with intent to harm, injures or kills ...

The 20-year-old, believed to be a student at the school, gained access to his mother’s handgun, according to authorities.

An active shooter has been reported in the area of Student Union. Police are on scene or on the way. Continue to seek shelter ...