The Florida shooting took place at Marjory Stoneman Douglas High School in Parkland, Florida yesterday, leaving 17 dead and 14 hospitalised.
Those killed were a mix of students and adults. Twelve were killed inside the school, two just outside and one on the street, while two further victims died from their wounds in hospital.
Former student Nikolas Cruz was arrested at the scene and has now been charged with 17 counts of premeditated murder.
A mugshot released by police shows Cruz staring blankly at the camera, wearing a black t-shirt.
Cruz was armed with an AR-15-style rifle and had multiple magazines of ammunition when he surrendered to officers in a nearby residential area, police said.
He loved guns and had posted photographs on social media posing with weapons, police and former classmates said.
READ MORE: Florida shooting suspect Nikolas Cruz in pictures
Teachers at the school had discussed threats made by Cruz while he was a student there, before he was expelled for fighting.
One student said yesterday: “I think everyone had in their minds if anybody was going to do it, it was going to be him.”
Cruz’s mother died three years ago and his father died when he was a child.
The shooting was the 18th in a U.S. school this year, according to gun control group Everytown for Gun Safety.
It was the deadliest ever at an American high school, surpassing the 1999 rampage at Columbine High School in Littleton, Colorado, where two teenagers killed 12 students and a teacher and then themselves.
This is a developing story, more to follow…