Boy, 12, Arrested for Allegedly Stabbing Twin Sister to Death, Wounding Mom in Attack at Home: Cops

Brigid Curtin, 12, died Monday after being stabbed in the neck and torso, officials said.

A 12-year-old boy was arrested for allegedly killing his twin sister and injuring his mother in a brutal knife attack at their Connecticut home, officials said.

Brigid Curtin, 12, died Monday after being stabbed in the neck and torso, the Hartford County Medical Examiner’s Office told ABC News.

Brigid had been allegedly attacked by her twin brother, who has not been named. He is accused of also attacking their mother, 56-year-old Janemarie Murphy, who was able to call for help, according to reports. 

Murphy called 911 about 3:30 p.m. “saying she and her daughter had been stabbed by her son,” the West Hartford Police Department said in a statement to ABC News. 

Emergency responders rushed to the home, where they took the boy into custody and began working on treating Brigid and her mother.

Brigid and her mom were taken to St. Francis Hospital and Medical Center in Hartford, but Brigid could not be saved. Murphy was listed in stable condition, police said.

Murphy has worked as a lobbyist for the Hartford law firm Murtha Cullina LLP for more than two decades, the firm said. 

"We are devastated by the horrific tragedy affecting our friends and colleague Jane Murphy," the law firm said in a statement to ABC News. “Jane has been a valued member of the government affairs group of Murtha Cullina LLP for over 24 years. We are doing all we can to support Jane and her family, and asked everyone to please respect their privacy during this extraordinarily difficult time."

Prior to joining Murtha Cullina, Murphy worked as a legislative aide to the Connecticut State Senate majority office and the Senate President Pro Tempore of the Connecticut General Assembly, according to her biography on the firm’s website. 

Police say the attack is under investigation. A motive remains unclear. 

The boy was reportedly also injured in the incident. He was arraigned Tuesday in his hospital bed at Connecticut Children’s Medical Center on one count of murder with special circumstances and first-degree assault, authorities said. 

He has been remanded to the custody of the Connecticut Judicial Marshals, ABC News reported. He is too young to be charged as an adult, officials said.

“Today we are mourning the loss of a beautiful young lady and praying for the recovery of her mother,” West Hartford Mayor Shari Cantor said in a statement. “Our special community of West Hartford is in pain. Please keep the family in your thoughts and prayers. Let us give them the space, privacy, and time to grieve and heal.”

Authorities will do all they can to support everyone affected by the tragedy, including relatives, students, teachers, neighbors and friends of the Curtin-Murphy family, Cantor said. 

“I have received many calls and texts asking how people can help. Thank you. Hug your loved ones and friends a little tighter. Be generous with your time and your heart,” Cantor said. “If you are moved to make a donation, please consider giving to organizations that have as their mission to help families in crisis including the Bridge Family Center, Town That Cares, as well as faith and community organizations. 

“With a heavy heart, I wish our whole community peace and love,” she said.