In a grim turn of events unfolding in Pennsylvania, three individuals were discovered deceased in a residence on Monday following an intense standoff, which concluded with the apprehension of one suspect.

According to PhillyBurbs.com, authorities have detained 55-year-old Kevin Castiglia. He faces charges including terroristic threats, simple assault, possession of an instrument of crime, and reckless endangerment. However, he has not been formally accused of the deaths of his family members: his parents, Judith Castiglia, aged 84, and Fred Castiglia, aged 90, alongside his sister, Deborah Castiglia, 53, who were all discovered lifeless inside the home.

The unsettling chain of events began when Deborah Castiglia’s boyfriend grew concerned after not hearing from her since Saturday. His search for her led him first to her residence in Doylestown, where he found no signs of her presence. Undeterred, he proceeded to her parents’ home, noting her vehicle parked in the driveway.

Upon his arrival, he knocked on the door but received no response, leading him to leave after noticing the absence of any lights inside. His unease compelled him to return on Monday, where he was greeted at the door by Kevin Castiglia, clad in a bathrobe. When inquiring about Deborah’s whereabouts, Kevin casually suggested she might have gone on vacation, a statement that only deepened the mystery surrounding the tragic discovery.

The documents say he knocked at the door but got no answer and left after observing the lights off. On Monday, he went back to the home and this time was met at the door by Kevin Castiglia, who was wearing a bathrobe. The boyfriend asked to speak with Deborah, and her brother told him she had probably gone on vacation.

Then Kevin Castiglia brandished a “large Psycho-type chef’s knife” at the boyfriend and said, “Don’t ever come here again or I will kill you.”

The boyfriend left and called police.

Police arrived and initially got no answer to their knocks at the door, but eventually Castiglia answer the door, still wearing the bathrobe and now armed with two knives.

Castiglia spoke incoherently, the documents say, and when he pointed the knives at the officers, they deployed tasers unsuccessfully. Castiglia pulled the taser probes out of his body, slammed the door shut and locked it, the documents say.

Members of the South Central Emergency Response Team were called to the scene and made forced entry, finding Deborah Castiglia dead in the kitchen. Her parents were dead in the home’s lower level.

They located Kevin Castiglia, still armed with knives, who ran to a second floor bedroom where he barricaded himself.

He was eventually taken into custody after an hours-long standoff later Monday night.

Police said charges against him will likely be upgraded.

Property records show that the family had been longtime members of the community, living there since 1970.