Donna Caponera, 69, was found dead at home after police traced a silent 911 call to Edgemere Road.
EAST HAVEN, Conn. — Donna Caponera was remembered as a longtime caregiver for children before police said the brother caring for her killed her inside an East Haven home.
Caponera, 69, once ran The Cub House Daycare and was described in her obituary as a patient, warm and devoted woman who helped raise a generation of children in a safe place. Her death is now the center of a murder case against her brother, Sean McCormack, 56, who police say cared for her as Alzheimer’s disease advanced.
The public memory of Caponera has become an important part of the story because the criminal record tells only the final, violent moments. Her obituary identified her as Donna McCormack Caponera of East Haven and the widow of Mark Caponera. It said she was the beloved owner and heart behind a local day care before retirement. The tribute said children in her care were nurtured, encouraged and loved as if they were her own. It also named surviving family members, including her sister, Linda Jaconette, and her brother, Sean McCormack. Days after that remembrance appeared, McCormack stood before a judge in New Haven Superior Court on a murder charge in her death.
The police response began with a call that contained no explanation. Around 5:30 p.m. May 16, East Haven dispatchers received a 911 call in which no one was heard speaking. The call traced back to an Edgemere Road home. Officers arrived and found McCormack sitting on the kitchen floor, heavily intoxicated, police said. Caponera was found in the living room with what police called apparent fatal injuries. East Haven firefighters pronounced her dead at 5:48 p.m. McCormack was detained and taken to a hospital. Police first charged him with first-degree assault while he was under guard, then charged him with murder after obtaining a warrant.
Investigators say the physical scene showed Caponera did not die from natural causes. Court records said she was in a pool of blood and had a cellphone charging cord around her neck. A bloodied kitchen knife was nearby, along with an open bottle of vodka and discarded cigarettes, according to the records. McCormack had a bleeding injury on the inside of his arm and showed signs of self-harm, authorities said. The medical examiner later ruled the death a homicide caused by ligature compression and sharp force injuries. Police have not publicly released the complete autopsy report, and the exact sequence of injuries has not been laid out in open court.
What happened before the killing remains partly known through family interviews and court summaries. Caponera had Alzheimer’s disease, and McCormack served as her full-time caregiver and held power of attorney, according to records. Relatives told investigators he had been gentle with her and had cared for her well. They also said her condition had grown harder to manage, with anger and physical aggression appearing in the later stage of the disease. Investigators wrote that McCormack was getting burned out, losing sleep and attending Alcoholics Anonymous meetings online. They also said he had been sober for about six months before police found him intoxicated inside the home.
The case file includes words McCormack allegedly spoke after police arrived. According to the arrest warrant, he told officers that Caponera had passed away. During medical treatment or transport, authorities said he made statements including, “I just killed,” “I can’t believe what I just did” and “Now she’s laying here dead.” Investigators also found notes in the house, including one that appeared to say, “This is what Alzheimer’s will do to you.” Prosecutors may use those statements and writings as evidence, but a judge could later be asked to decide whether any of them are admissible. McCormack has not been convicted and remains legally presumed innocent.
McCormack’s court process began after his release from the hospital. His bond was increased from $500,000 on the assault case to $2 million on the murder charge. At arraignment, he did not speak, and a public defender appeared for him. The case was moved to Part A in New Haven, where serious criminal cases are heard. Police said the investigation included East Haven detectives, the Connecticut State Police Central District Major Crimes Squad and the New Haven State’s Attorney’s Office. No public record reviewed for this article showed a second suspect or an announced defense theory.
For East Haven, the case connects a private home, a family illness and a public death investigation. Edgemere Road was closed in the area after police arrived, and investigators remained at the home as the scene was processed. Neighbors saw a large police presence before officials released Caponera’s name. In the days that followed, the legal story grew more detailed, but the community remembrance stayed simple. Caponera was mourned as a woman whose work centered on care, safety and children. That image stands in sharp contrast to the allegations that her own care ended in violence.
The murder case remains pending in New Haven Superior Court, with McCormack held on $2 million bond. Future hearings are expected to focus on the warrant evidence, the medical examiner’s findings and any defense challenges to the state’s account.
Author note: Last updated June 19, 2026.