One of the students at Luzira SS struck a security guard only known as Geoffrey.
Luke Owoyesigyire, the deputy police spokesperson for Kampala Metropolitan, said that a student punched a security guard on Tuesday.
A few minutes after collapsing, the security guard was declared dead, according to Owoyesigyire.
He said that the student, who is in senior four, is on the run. He did, however, reveal that the incident is being looked into by the Jinja Road police.