A 19-year-old man fatally shot himself inside a Pequea Township home after an hours-long police incident, according to officials.

Police received a report around 5:20 p.m. of a man with a firearm acting suspiciously in the area of Westbridge Court. A caller said they could see their neighbor walking in and out of his house with a long gun, according to police.

When officers arrived they found the man had built a barricade on the back porch of a home on Westbridge Court. At times he would lie out of sight behind the barricade while armed, police said.

Police asked the man to disarm and speak with them. He "began to comply" but then ran back into the house, where a single gunshot was heard seconds later, according to police.

The Lancaster County Special Emergency Response Team went into the home and found the man dead from a self-inflicted gunshot wound, police said.

During the incident, residents had been told to stay inside and turn off the lights, a neighbor said.

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The neighbor said SERT was stationed outside a home for several hours. Officials were using a bullhorn to communicate with someone in the home. EMS units were also on scene.

Just before 11 p.m., law enforcement officials entered the home. The neighbor said she could hear glass breaking and people yelling. Several people then exited the house. Minutes later, medical personnel and some fire units were released from the scene.

Police said roadways reopened and neighbors were allowed to move about the area around 10 p.m.

Two shotguns and an AK-47 rifle were found in the home. Police continue to investigate the circumstances surrounding the incident.