Donald Rudolph arrested after he killed his mother, his sister and his mother’s boyfriend

Donald Rudolph, a teenager from Weymouth, Massachusetts, has been charged with killing his mother, his mother’s boyfriend and his sister.

Donald Rudolph, 18, was arrested after police discovered a gruesome scene at his mother’s home.

Norfolk District Attorney Michael Morrissey said on Friday that police found the bodies after a neighbour called and said there was suspicious activity at the house just after 8:00 p.m. on Thursday.

When police arrived they allegedly saw the suspect crawling out of a basement window, WHDH-TV reports.

Donald Rudolph, a teenager from Weymouth, Massachusetts, has been charged with killing his mother, his mother's boyfriend and his sister

Chief Richard Grimes, of the Weymouth Police Department, said: “The initial discovery of the body in the house led officers to further investigate.”

Michael Morrissey said officers first saw the body of 52-year-old Frederick Medina on the first floor of the home.

They then discovered the bodies of 50-year-old Paula Rudolph and her 24-year-old daughter Caylin in a detached garage.

Michael Morrissey said all three bodies showed evidence of massive trauma, but would not release details as to how the three people died.

He said: “At this time we’re unable to comment on any kind of motive or the exact sequence of events at which we have learned today.”

Neighbour Beth Cantor, who placed flowers at the victims’ home on Friday, said: “It’s very disturbing to know that something like this can happen.

“The horrific crime is just startling.”

According to authorities, Caylin Rudolph, the killer’ sister, had twin daughters who are safe.

Donald Rudolph will be arraigned on Monday.