Residents in Buck County, Pennsylvania were urged to take cover in their homes Sunday night as a police operation was ongoing.
According to WPVI, police had a heavy presence in the area of Bristol and Lower State roads as a manhunt was on for an escaped prisoner.
The reverse 911 system was also activated.
Reverse 911 is a system that allows authorities to notify large groups of residents in the event of an emergency or when a tragedy has occurred.
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