Officers were called to the 3900 block of Charter Club Drive around 10:27 a.m. Monday after an elderly caller reported that several people were dead inside the home, authorities say.
Inside the residence, officers found two men and a woman dead from gunshot wounds to the head.
According to the Bucks County District Attorney's Office, Steven Chow, 59, shot and killed 21-year-old Raymond Chow and 63-year-old Amy Troung while they were in their beds. He then shot and killed himself, investigators said.
Police haven't disclosed the relationship between the victims, but residents in this usually quiet neighborhood said they are family members who have lived on the block for more than a decade.
"They're always a very nice calm family. They walk a lot. They're always out tending to their landscape," said Jennifer DiCarlantonio, who lives on the block.
"It's heartbreaking, he was a 21-year-old kid. Nobody deserved that," added Lisa Brown.
Brown told Action News her son went to Central Bucks East High School with Raymond Chow.
She remembered him as being bright and among the top students in his class.
"As a parent, you can't imagine that kind of tragedy or doing anything like that. So that's the only thing, or how my kids would feel about it, or my son feels about it knowing that he graduated with this kid and he knew this kid," she said.
Throughout the day, the Action Cam spotted several law enforcement officers going in and out of the home.
"It's sad that people got to that point," said Scott Woody who also lives on the block.
Many residents said the news was shocking, to say the least.
"Jaw-dropping shocked," noted Mike Fusco. "Nobody heard anything. Nothing out of the ordinary for any of us."
Police are still investigating what led up to the murders.