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Man seen with rifle prompts lockdowns at Atascadero junior high and district office, police say

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Posted at 4:09 PM, May 10, 2021
and last updated 2021-05-10 19:10:05-04

An arrest was made following an incident that placed Atascadero Junior High on lockdown Monday afternoon.

Atascadero police say they responded to the area after being notified around 1:50 p.m. of a man with a rifle seen entering the creek behind the school, which is located on the 6500 block of Lewis Ave.

Once on scene, police say a resident on Capistrano Avenue told them a man had approached them while holding what appeared to be a similar weapon before taking off toward the creek.

The nearby junior high and Atascadero Unified School District Office were placed on lockdown as a precaution while a search for the man was underway.

A third report was also received from a person in the area who reportedly told police their children were playing outside when someone pulled out a rifle in front of them a little earlier.

Officers say they located Arthur Castellanos, who admitted to having a BB gun, which police say was located at the scene.

Castellanos was then positively identified as the person the children had seen, police said in a press release.

Police say the suspect was arrested and booked into the San Luis Obispo County Jail on suspicion of brandishing a firearm, violating probation and having an outstanding warrant.