Buckingham Township police investigating double-murder suicide inside home in Bucks County

BUCKINGHAM TOWNSHIP, Pa. (CBS) — A man shot and killed his son and a woman before dying by suicide inside a home on Charter Club Drive in Buckingham Township on Monday, according to the Bucks County District Attorney's Office.

Buckingham Township police responded to a 911 call from an elderly caller about an unresponsive person in the 3900 block of Charter Club Drive shortly before 10:30 a.m. Monday. Upon arrival, officers were met by the caller.

According to the DA's office, police found two men and a woman dead with gunshot wounds to the head.

Investigators claim 59-year-old Steven Chow fatally shot his son, 21-year-old Raymond Chow, and 63-year-old Amy Troung, while they were in their beds. He then died by suicide, according to the DA's office.

A neighbor who lives nearby described to CBS News Philadelphia the family as quiet. She said her son went to school with Raymond Chow.

The investigation remains active and ongoing, and the DA's office says anyone with information can call its office or Buckingham Township police.

If you or someone you know is in emotional distress or a suicidal crisis, you can reach the 988 Suicide & Crisis Lifeline by calling or texting 988. You can also chat with the 988 Suicide & Crisis Lifeline here .

For more information about mental health care resources and support , The National Alliance on Mental Illness (NAMI) HelpLine can be reached Monday through Friday, 10 a.m.–10 p.m. ET, at 1-800-950-NAMI (6264), by texting "HelpLine" to 62640, or by emailing helpline@nami.org .