PARKLAND, Florida- A Florida community will join together on Thursday to mourn the 17 victims of a suspected lone gunman, as officials seek to discover how the heavily armed teenager managed to mingle with students in one of the deadliest school shootings in US history.
The ex-pupil, identified as Nikolas Cruz, 19, walked into the Marjory Stoneman Douglas High School in Parkland on Wednesday shortly before classes ended and opened fire on students and teachers, Broward County Sheriff Scott Israel said.
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 was expelled for unspecified disciplinary reasons, police and former classmates said.
It was the deadliest shooting 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.
It was also the second-deadliest at a US public school, behind the 2012 massacre of 20 first-graders and six educators at Sandy Hook Elementary in Newtown, Connecticut, by a gunman who also killed his mother and himself.
Since Sandy Hook, US schools have installed electronically controlled doors and added security staff.
"Our focus at the School District is certainly to find out from a safety perspective what's occurred," Marjory Stoneman Douglas High Board Member Donna Korn told Treasure Coast, a local newspaper group.
A law enforcement officer is assigned to every school in the district. The sheriff's office also provides active shooter training and the schools have a single point of entry, she said.
"We’ve got the people prepared, we have prepared the campuses, but sometimes people still find a way to let these horrific things happen," Korn said.
Asked about having armed guards in schools, Israel told a news conference: "If a person is predisposed to commit such a horrific act ...there not a lot law enforcement or any entity can do about it."
'THE WORST AND BEST OF HUMANITY'
The Valentine's Day bloodshed in the racially mixed community about 45 miles (72 km) north of Miami was the latest outbreak of gun violence that has become a regular occurrence at US schools and college campuses in recent years.
Television footage showed images of students streaming out of the building with hands raised in the air, weaving their way between heavily armed, helmeted police officers, as a fire truck and other emergency vehicles idled nearby.
Anguished parents raced to the school of 3,300 students and a nearby hotel that was set up as a checkpoint to find their children.
"This has been a day we’ve seen the worst in humanity. Tomorrow (Thursday) is going to bring out the best in humanity, as we come together to move forward from this unspeakable tragedy," Broward County Public Schools Superintendent Robert Runcie told a news conference.
Florida's two US senators, briefed by federal law enforcement officials, said the assailant wore a gas mask as he stalked into the school carrying a rifle, ammunition cartridges and smoke grenades, then pulled a fire alarm, prompting students and staff to pour from their classrooms into hallways.
The gunman tried to blend in with students who were fleeing the school but was spotted and taken into custody, the sheriff said in a statement.
A chilling cell phone video clip broadcast by CBS News showed what the network said was the shooting in progress from inside a classroom, where several students were seen huddled or lying on the floor surrounded by mostly empty desks. A rapid series of loud gunshots are heard along with hysterical screaming.
One survivor, Kyle Yeoward, 16, said he and about 15 fellow students and a teacher hid in a closet for nearly two hours before police arrived.
Those dead 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, Israel said.
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