The incident took place in Bridgeport, around 11:30 a.m., Monday, Oct. 24, in the 1200 block of State Street.
Bridgeport Police responded to the area after the city's 911 Center received a call reporting two people arguing with one person with a firearm, said Scott Appleby, director of Emergency Management for Bridgeport.
Bassick High School, Cesar Batalla Elementary School, and Park City Prep schools were placed in a lock-in-/lockout for the time being. On-scene police reports indicated one man was detained and a firearm was recovered, Appley said.
The lock-in was lifted shortly after the arrest. Appleby said there was no threat to any students or staff.
Click here to follow Daily Voice Shelton and receive free news updates.