Click in the Eyewitness News Story Window above to watch Leanne Suter's report from the scene.
Florian was shot at about 12:20 a.m. at a party near Amboy Avenue and Neenach Street after an argument at a party in Sun Valley. He was declared dead at the scene.
At a candlelight vigil on Saturday night, friends and family mourned the loss of a 17-year-old known for his bright smile.
"He really liked football, and he was like a loveable person. He was a social butterfly," said Florian's cousin Stephanie Osario.
Florian was a football standout and looked forward to graduation and a future playing football in college. He was the oldest of three kids and the pride and joy of his parents.
No one was been arrested, and anyone with information is urged to call LAPD's North Hollywood division at (818) 623-4075.