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MONROVIA (CNS) - Authorities Thursday cleared a reported threat of an active shooter at Monrovia High School that turned out to be unfounded.
According to a statement early Thursday afternoon from the city of Monrovia, Monrovia police "received a single call of an active shooter at Monrovia High School," prompting a lockdown of the school and Monroe Elementary School.
However, officials said they did not believe it to be a credible threat, noting that other agencies in the area had received similar threatening calls.
In a note to parents that was obtained by CBS2, Monrovia Unified School District Superintendent Ryan Smith said: "About 30 minutes ago, someone called 911 to report an active shooter at Monrovia High School. As per protocol and out of an abundance of caution, the school immediately went into an emergency lockdown. As a precaution, due to the proximity to Monrovia High School, Monroe was also placed on lockdown."
Monrovia city officials released a statement just before 2 p.m. announcing that police cleared the campus and found no evidence of an active shooter, though police were set to remain on the scene as a precaution.
The lockdown at the school was subsequently lifted and classes were set to remain in session throughout the day, though the school implemented a reunification plan to reunite parents with students if the parents desired to retrieve their children.
An investigation into the threat was ongoing.