Tacoma police officers did arrest one student after the commotion at Mount Tahoma High School on Thursday.
The 16-year-old boy was booked into Remann Hall juvenile jail on Thursday afternoon on suspicion of possessing a weapon on school property and harassment, police spokesman Mark Fulghum said.
Students had reported the teen flashed a gun. However, officers found no weapon on him, Fulghum said. Nonetheless, the teen was booked on the possession charge based on witness statements, Fulghum said.
Mount Tahoma High School was locked down for several hours on Thursday after a fight broke out during a lunch period. A student reported seeing another student flash a weapon, prompting a large police response.
Officers and school officials slowly released students at the end of the school day.