The incident prompted school officials to implement a lockdown and an early dismissal.
It all began when the school received two threats around 8:40 a.m., and school district officials notified Warrington police, the district said in a statement.
As advised by officers, the school was subsequently put on lockdown, officials said.
Out of an abundance of caution, students at Mill Creek elementary school were ordered to shelter in place, according to district officials.
Students were eventually dismissed around noon.
No dangerous devices were discovered during a sweep, and no injuries were reported, Warrington Township police said.
"It was an emotional day for all of us, especially for the students and staff," chief Daniel Friel said.
"I applaud how my officers and the school district administration, students, and high school faculty staff handled this situation".
There was no immediate word on the context of the threats.
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