Authorities confirmed that a father and daughter were found dead in an apparent murder-suicide in Jessup, Pennsylvania, at a home down the street from police headquarters. Police initially responded to the home for a welfare check, and are now investigating the case as a murder-suicide. Authorities said they believe the murder-suicide was an isolated incident and that there was no threat to the public. Related: Mother Killed Daughter, 21, With Autism in Suspected Murder-Suicide Attempt A mother in Rhode Island was arrested after she allegedly killed her 21-year-old autistic daughter in a suspected murder-suicide attempt. Anna Maria Angelosanto has been charged with first-degree murder in the death of her daughter, Alexandra Straccia, according to WPRI.