FILE - This Sept. 27, 2016 file photo shows Nathan Carman arriving in a small boat at the US Coast Guard station in Boston. Carman's family filed a lawsuit in New Hampshire on Monday, July 17, 2017 accusing him of killing his grandfather and possibly his mother, who was lost at sea during a mother-son fishing trip. The family says Carman wanted to collect a multimillion-dollar inheritance. (AP Photo/Michael Dwyer)
FILE - This Sept. 27, 2016 file photo shows Nathan Carman arriving in a small boat at the US Coast Guard station in Boston. Carman's family filed a lawsuit in New Hampshire on Monday, July 17, 2017 accusing him of killing his grandfather and possibly his mother, who was lost at sea during a mother-son fishing trip. The family says Carman wanted to collect a multimillion-dollar inheritance. (AP Photo/Michael Dwyer) Credit: Michael Dwyer

KEENE, N.H. (AP) — A man suspected in the 2013 slaying of his millionaire grandfather could get more than $7 million from his estate, according to court documents.

An accounting of John Chakalos’ finances filed in New Hampshire probate court this week by attorneys for the executor of his estate indicates it has a balance of nearly $29 million, The Hartford Courant reported.

The 87-year-old real estate developer was found fatally shot at his Windsor, Connecticut home in 2013. His grandson, Nathan Carman, of Vernon, Vermont, was a suspect, but was never charged.

Chakalos’ will called for one of his daughters, Linda Carman, Nathan Carman’s mother, to get a portion of his estate. The missing woman is presumed dead after a boat carrying her and Nathan Carman, who’s in his early 20s, sank during a fishing trip near Rhode Island last year.

The new accounting shows Chakalos’ estate is now worth less than the nearly $40 million it was valued at when Linda Carman disappeared, the newspaper reported.

Chakalos was known in the Pioneer Valley for constructing assisted-living facilities, including Linda Manor Extended Care Facility in Leeds in 1989, and later Sunbridge Care & Rehabilitation in Hadley.

Last month, Linda Carman’s three sisters sued in New Hampshire’s Cheshire County, where Chakalos owned another home. They’ve asked a judge to block Nathan Carman from collecting money from his grandfather’s estate and have accused him of killing his grandfather and possibly his mother in a bid to collect the inheritance.

Carman has denied any involvement in his grandfather’s death and has said he didn’t sabotage the boat used for the mother-son fishing trip.

The sisters’ attorney has said that if the sisters win the lawsuit and any of the money that would have gone to Nathan Carman goes to them, “they pledge to use those funds exclusively to pay for expenses incurred relating to the investigation into the death of their father and disappearance of their sister, and any remaining funds will go to charity.”