(CNN) - The Broward County Sheriff's Office in Florida is responding to reports of a shooting at Stoneman Douglas High School in Parkland. There are reports of victims.
Aerial footage from CNN affiliate WSVN showed a number of people lying on the ground outside the school, being treated for injuries and moved to ambulances.
Dozens of police vehicles are on site, including one tank, along with a team of heavily armed law enforcement officers.
Developing story - more to come