No one was injured after a false police call about an armed robbery prompted a Douglas County high school to be placed on lockdown for two hours Monday afternoon, authorities said.

New Manchester High went on lockdown around 12:15 p.m., with all doors to the school being secured and no one being allowed in or out, Douglas County Schools spokeswoman Portia Lake told AJC.com. It was in response to what the school district called a “potentially dangerous situation” in a nearby neighborhood.

The lockdown was lifted at 2:14 p.m., Lake confirmed. The school district said the police activity was in an area across the street from the school, which is located off Ga. 92 in southeast Douglas County.

According to Douglas County sheriff’s Capt. Elmer Horn, a homeowner in the area called a family member and reported being robbed at gunpoint. The homeowner then shot into a back window of the house.

Horn said the SWAT team was called to the scene for precautionary measures, but when officers did not locate anyone around the area and didn’t find evidence of a robbery, they sent the homeowner to the hospital for a mental evaluation.

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