I believe this kid was 19 at the time of his crimes.
16 Feb: MyPalmBeach: Alleged Parkland shooter left suburban Lantana home over gun dispute
By Alexandra Seltzer and Eliot Kleinberg
LANTANA — Nikolas Cruz, the man charged in this week’s school massacre, left a suburban Lantana mobile home in November because his benefactor gave him an ultimatum: you or the gun.
“He bought a gun and wanted to bring it into my house,” Rocxanne Deschamps said publicly in comments that have since been removed from her Facebook page...
And Chad Bennett, Deschamps’ friend, said Cruz “chose the gun and he left.”...
Bennett said Cruz’s younger brother, who turns 18 next week, has continued to stay at the suburban Lantana home. On Friday, sources close to the investigation confirm, Palm Beach County Sheriff’s deputies, assisting their Broward County counterparts, removed a person at midday from the mobile home to a mental health facility for treatment. Bennett said the person is Nikolas’ brother, whom The Palm Beach Post is not naming because he is a juvenile...
http://www.mypalmbeachpost.com/news/local/alleged-parkland-shooter-left-suburban-lantana-home-over-gun-dispute/NnRFpOjnkEGAh3K5wJ2m2I/