A partial lockdown at River Ridge High School has been lifted, Lacey police Sgt. Jaime Newcomb said Thursday.
The school was placed in partial lockdown about 9 a.m. after a threatening note was found in a bathroom that referenced a gun, he said.
A School Resource Officer — a Lacey police officer who works at the school — investigated and did not find a gun.
Newcomb said the incident remains under investigation.
A partial lockdown typically means schools lock exterior doors from the outside and students aren't allowed to leave the buildings.