A Florida high school has been locked down after a shooting, US authorities said.
The shooting happened at Marjory Stoneman Douglas High School in Parkland, according to the Broward Sheriff's Office.
It was not immediately clear how many people were wounded.
Coral Springs Police said on Twitter the school was locked down and that students and teachers inside should remain barricaded until police reach them.
Police are working an active shooter scene, and ask that if you are in touch with your student you ask that they remain calm and barricaded until police come to their room, this is for everyone's safety. Do NOT call our 911 or non-emergency number unless it is an emergency.— Coral Springs Police (@CoralSpringsPD) February 14, 2018
TV footage showed at least one person being wheeled to an ambulance while emergency workers appeared to be helping others on the pavement.
The news broadcasts also showed students running across the street.
Student describes scene at Marjory Stoneman Douglas High School pic.twitter.com/KPgYpJGeWA— WSVN 7 News (@wsvn) February 14, 2018