A 14-year-old boy brought a handgun to school Tuesday, Burien Police said on its Facebook page.
Police said the boy was showing the gun off to fellow students, but never made any threats and did not point the gun at anyone or use it threateningly.
Another student reported the incident to school staff. The name of the school was not mentioned in the statement.
The teen was booked for felony possession of a handgun.
Police say they are investigating where the student got the gun.