Photos and videos from the scene depict a significant law enforcement presence responding to the incident.
EMTs and paramedics have pronounced a 70-year-old male dead and are treating four patients.
Nasser was rushed to Meir Hospital in Kfar Saba, where he succumbed to his injuries the next day. His murder remains under police investigation, though he had no known ties to criminal activity.
Including the most recent deaths, about 50 Arabs have been killed in violent, crime-related incidents this year, up from 27 last year.
Paramedics are on scene giving treatment to one other person who is in serious condition.
Reports cited the police as saying the two victims were visiting from Israel but did not note whether they were Palestinian.
The shooting took place in a campus area where several schools, for both children and adults are located. Police said students were held indoors at the affected school and also at nearby schools.
Some 230 Arab Israelis were murdered in 2024, according to Abraham Initiatives data. In comparison, in 2022, 116 Arabs were killed in Israel, while in 2021, 126 were killed.
Dandis went to Nahal Telem in December 2007 with friends in order to cause the death of Jewish soldiers, the military continued.
The shooter reportedly turned the gun on himself after wounding two classmates.