Coral Springs police officer, Tyler Reik, confirmed the boy's identity on Wednesday. The circumstances surrounding the death of the student are unclear.
He was the second teenager who witnessed the shootings during the shootings in one week.
Sydney Aiello, 19, graduated in 2018 from Marjory Stoneman Douglas High. Aiello, a student at Florida Atlantic University, committed suicide on March 17.
His funeral took place Friday in Davie, Florida.