UPDATED-Florida School Mass Shooting: At Least 20 Injured in ‘Mass Casualty Incident’ – Developing


Some Students Exiting Building

There is an active shooting situation at a high school in Parkland, Florida, that began around 2:30 PM ET.

"This is a multi-casualty incident, according to law enforcement officials, but we do not know exactly what that means and how many people have been injured," CBS Miami reports. The school is Marjory Stoneman Douglas High School.

"At least 20 victims in 'mass casualty incident' at Parkland, Florida, high school, according to Margate Fire Department," CBS News adds.

Federal ATF agents have been called in, according to MSNBC.

The FBI is on the scene.

UPDATE: 4:00 PM ET –
MSNBC reports a shooter appears to be in custody, and there are fatalities.

UPDATE: 4:16 PM ET –
A shooter is in custody. 


This is a breaking news and developing story. Details may change. This story will be updated, and NCRM will likely publish follow-up stories on this news. Stay tuned and refresh for updates.