New Haven police are searching for the student who brought a gun onto the grounds of the New Light High School on Wednesday.
New Light High School and Conte/West Hills Magnet School were in lockdown mode after the student threatened to get the gun, police said. The lockdowns have since been lifted.
Police said there are conflicting reports on what happened, but an argument or a fight might have broken out at the school at 2:10 p.m.
After the fight broke up, someone reported a student said they were going to retrieve a gun, then left the school, police said.
The student came back to the school with a firearm but did not enter the building. When they were confronted by school security, the student ran away, police said.
Police remained on school grounds until dismissal was complete.