At least 17 people have been killed in a shooting at a local high school in Parkland, Florida, police say.
The suspect has been named as Nikolas Cruz, 19, and is a former student at the school who had been expelled.
He reportedly pulled the fire alarm and caused chaos in the school before he started shooting, law enforcement officials told CBS News.
Students were forced to hide in classrooms as police scoured the building.
The local public school district tweeted: “Today, close to Marjory Stoneman Douglas High School’s dismissal, students and staff heard what sounded like gunfire.”
“The school immediately went on lockdown but is now dismissing students. We are receiving reports of possible multiple injuries,” it said.
Police were clearing students from the school “one building at a time”, the school said.
