Brian Shelleby received 15 to 30 years in prison nearly a year after the Castle Shannon fire killed 19-year-old Lakyn Shelleby.

PITTSBURGH, Penn. — A Pennsylvania father who admitted intentionally setting fire to his family’s Castle Shannon home was sentenced to 15 to 30 years in prison after the blaze killed his 19-year-old daughter and severely burned his estranged wife. Brian Shelleby, 47, was sentenced Sept. 10 after pleading guilty a month earlier to third-degree murder and aggravated arson in the death of Lakyn Shelleby.

The sentence brought the criminal case to a close nearly one year after the Sept. 14, 2025, fire on Corbett Drive in Castle Shannon, an Allegheny County community south of Pittsburgh. Shelleby also received a concurrent sentence of five to 10 years for aggravated arson and credit for 361 days already served. His guilty plea avoided a trial in a case in which he had initially faced a criminal homicide charge that could have led to a first-degree murder prosecution.

The hearing placed the consequences of the fire at the center of the courtroom. Carly Shelleby, Lakyn’s mother and Brian Shelleby’s estranged wife at the time of the blaze, told the court about losing her daughter and suffering severe burns herself. She described Lakyn as intelligent and caring and asked how her husband could have set the home ablaze while she and their daughter were still there. Other relatives also addressed the court, revealing a family divided between those who continued to support Brian Shelleby and those who said they could not forgive what happened.

The fire followed an argument over whether Brian Shelleby could remain at the house while the couple were separated, according to the criminal complaint and subsequent reporting on the case. Carly Shelleby told investigators that she informed him that he could no longer stay there. She said he threatened to burn down the house, obtained a 5-gallon gasoline container and spread gasoline through the residence. Brian Shelleby later told police that he had been trying to persuade his wife to allow him to stay and went for the gasoline after she again told him to leave.

The blaze developed with extraordinary speed. Emergency dispatchers began receiving calls shortly before 10 a.m., and first responders arrived to find the house engulfed in flames. Carly Shelleby escaped but suffered serious burns. Lakyn remained inside. Firefighters eventually found her unresponsive, and she was pronounced dead at the scene. A firefighter was also treated after suffering smoke inhalation while responding to the fire.

Neighbors described an abrupt explosion followed by flames and dense smoke. Several residents tried to help before firefighters could bring the scene under control. Patrick Funwela, who lived nearby, said the home seemed to become engulfed within seconds. He and others tried to reach Lakyn by breaking a window, using a ladder and calling for her through the smoke, but they received no response. The failed rescue effort became one of the most painful memories for neighbors who had watched Lakyn grow up in the community.

Lakyn had begun her sophomore year at the University of Pittsburgh and regularly returned to Castle Shannon. She graduated from Keystone Oaks High School in 2024, where the school district said she was a high-honors student, a member of the National Honor Society and a participant in marching band. Friends remembered her as confident, bright and energetic. She played tenor saxophone and had earned a first-degree black belt in Tang Soo Do, according to memorial information published after her death.

In the days after the fire, friends, neighbors and former classmates gathered for a prayer service at St. Anne’s Church. Flowers and candles also appeared near the damaged home. The public mourning stood in contrast to the criminal investigation unfolding around the same property, where fire investigators returned to document the scene and collect evidence. At the time, Carly Shelleby was recovering from her injuries while the family faced the simultaneous loss of Lakyn, the destruction of the home and Brian Shelleby’s arrest.

The prosecution changed course before the case reached trial. On Aug. 10, 2026, Brian Shelleby entered a negotiated guilty plea to third-degree murder and aggravated arson causing bodily injury. Court reporting showed that other arson-related counts were withdrawn as part of the agreement. The plea also eliminated the need for a trial on the more serious murder theory that had been expected. Defense lawyers said at the time that Shelleby accepted responsibility and was deeply remorseful.

At sentencing, Shelleby did not personally address the court. Defense attorney Phil DiLucente instead read a statement in which Shelleby apologized to his family and said he wished he could undo the events of that day. DiLucente also argued publicly that the case involved a devastating act by someone who had lost his daughter as a consequence of his own conduct. Carly Shelleby and her son Nathan, however, focused their remarks on Lakyn and the permanent absence the fire created in their family.

Carly Shelleby said she continues to hold onto memories of her daughter rather than allowing the criminal case to define her. At the sentencing hearing, she displayed a photograph of Lakyn and spoke about her smile, personality and love of butterflies. That focus echoed the way Lakyn’s friends and former school community had described her after the fire: not simply as the victim of a homicide, but as a college student, musician, martial artist, employee, friend and daughter whose life had been moving forward when it ended.

For the court, the case now ends with a 15-to-30-year prison sentence and credit for time already served. For Lakyn Shelleby’s family, the sentencing fixes Brian Shelleby’s punishment but does not alter the loss described throughout the hearing. The 19-year-old college student remains at the center of a case that began with a fire at her family’s home and concluded almost a year later with her father’s guilty plea and imprisonment.

Author note: Last updated October 21, 2026.