The son of a Coraopolis man whose death in March was ruled homicide has filed a civil wrongful death suit against the man’s wife and an Adams Township man whose altercation with the deceased man led to his death, according to the suit.

Joshua Olson, son of the late Donald P. Miller, 59, of Coraopolis, claims in a civil wrongful death suit that a confrontation between his father and an Adams Township man who was having an affair with his father’s wife led to his death.

Olson filed the suit Thursday in Butler County Common Pleas Court against Miller’s wife Margaret J. Miller, of Coraopolis, and Jake Reges, of Adams Township, seeking unspecified damages and a jury trial.

The suit claims Margaret Miller had a child with Reges, and Reges strangled Donald Miller when he went to Reges’ home March 6 while Margaret Miller was present. She did not intervene. She and Reges failed to render aid and delayed in calling 911, according to the suit.

Donald Miller was taken UPMC Presbyterian Hospital in a coma and was on life support until he died March 12, according to the suit.

The Allegheny County Medical Examiner’s office ruled his death a homicide, the Butler Eagle reported earlier this week. Butler County District Attorney Richard Goldinger said he will decide on whether to file charges after the Adams Township Police Department completes its investigation.

Butler attorney Al Lindsay, who along with Pittsburgh attorney Wayne Chiurazzi filed the suit on Olson’s behalf, said Friday that Donald Miller’s will and the prenuptial agreement between he and his wife carry “immense” consequences.

In the 2018 will, his wife would receive 100% interest of his business, Miller Plastics, Inc., their primary residence in Coraopolis, property in Burgettstown, an old factory building in Imperial, all tangible personal property, the estate and a $500,00 death benefit from his insurance policy if he died before her, according to the suit.

The prenuptial agreement they entered into two days after they were married in May 2015 details what she would receive if they divorce. She would have no right to the primary residence and would have to vacate. She would get $15,000 if she vacated within 30 days of separation, according to the suit.

His wife would have no right to the business, the Burgettstown property or the old factory building if they divorced. He owned all three before the marriage. She would receive 50% of the marital property and 33% of the increase in the value of his retirement benefits if she cooperated in the divorce proceedings and didn’t raise a legal challenge to the prenuptial agreement, according to the suit.

“She got nothing in divorce. If he died, she got all of it,” Lindsay said.

According to the suit, Margaret Miller and Reges had an affair in which she became pregnant and had a child who was born in December 2025.

Donald Miller learned about the affair on Feb. 28 and was either called or voluntarily went to Reges’ home in Mars at 11 a.m. March 6. He entered the home and Reges attacked him by strangling him until he lost consciousness, according to the suit.

Reges is about 25 years younger that Donald Miller and is trained in jujitsu, the suit said. Miller had limited arm strength due to recent rotator cuff surgery, according to the suit.

Margaret Miller was present during the altercation and did not intervene, according to the suit. She and Reges didn’t render aid and delayed calling 911 for medical assistance, the suit said.

When they called, they did not identify Donald Miller, resulting in him being taken to the hospital as a Jane Doe and a delay in treatment and notification of family members by the hospital, according to the suit.

When questioned by police, Reges suggested he acted in self-defense, but there is no evidence of forced entry into his home, and he knew Donald Miller, according to the suit.

The suit contains claims of wrongful death and civil conspiracy.

The Butler Eagle was not able to contact Reges or Margaret Miller to seek their comments for this story.