Middletown — Linda Carman "intentionally" left her son out of her will three years before she vanished while on a fishing trip with him off Block Island, court documents show.

Nathan Carman died by suicide in June in a New Hampshire jail while awaiting trial on federal charges in connection with his mother's death. The federal indictment filed last year also implicated him in his grandfather's murder, which has never been solved.

According to Linda Carman's will, which was submitted as part of a request to have a probate judge declare the Middletown woman dead, Nathan Carman was "omitted" as a beneficiary in September 2013 — three months before her father John Chakalos was killed in his Windsor home.

"Nathan Carman is my only child," Linda Carman wrote in the second paragraph of her will, which was obtained by Hearst Connecticut Media Group. "I have intentionally omitted Nathan and all of his descendants as beneficiaries under my will."

The document does not elaborate why Linda Carman removed him from her will. Linda Carman left her horse Sophie Belle to a friend and the remaining assets to her three sisters, the will stated. One of the sisters has died since Linda Carman disappeared so her share will go the woman's two daughters, probate documents said. Linda Carman's estate could be worth more than $2 million, according to an attorney involved in the case.

Middletown Probate Judge Joseph Marino will hold a hearing on Oct. 25 to declare Linda Carman dead so her assets can finally be disbursed.

Linda Carman was last seen on Sept. 17, 2016, according to documents filed with Middletown Probate Court regarding her estate. But since her body has never been found, Linda Carman could not be declared dead until seven years had elapsed, according to state law. She was 54 when she disappeared.

Nathan Carman, 29, was accused of killing his mother while on a fishing trip off Block Island in his boat The Chicken Pox in 2016. Last year, he was charged with first-degree murder in her death and multiple counts of fraud.

Federal prosecutors said Carman killed his mother after depleting a $550,000 inheritance he received from the death of his grandfather. Prosecutors alleged Carman shot and killed his wealthy grandfather at his Windsor home in December 2013, but he was never charged with the homicide.

Linda Carman's sisters have tried to stall their father's estate proceedings for a decade to prevent Nathan Carman from obtaining his mother's one-fourth share of Chakalos' $43 million fortune.

In 2017, Nathan Carman's three aunts filed a lawsuit in New Hampshire, asking that he be prohibited from collecting part of a $43 million inheritance from Chakalos. The women argued that Nathan Carman was responsible for the death of their father and should be prohibited from any bequest under the so-called "slayer rule," the lawsuit stated. The lawsuit did not explicitly accuse Nathan Carman of killing his mother, but alleged he "left his mother behind" on the sinking boat.

The lawsuit was thrown out when a New Hampshire judge ruled Chakalos was a resident of Connecticut.

Nathan Carman had been the subject of an investigation by state and federal authorities for years in the disappearance of his mother after he claimed he didn't see her following a boating accident that left him adrift at sea. After eight days, Nathan Carman was rescued off the coast of Massachusetts by a passing freighter.