WINDSOR, Conn. (AP) - Police have returned to the home of a Connecticut man whose 2013 killing remains unsolved and whose daughter is presumed dead after her boat sank this year.

The Hartford Courant reports Windsor police were seen at John Chakalos' house Tuesday as they revisit the cold case.

The FBI and other agencies this month searched an abandoned property in Spofford, New Hampshire, owned by the Chakalos family.

John Chakalos was found fatally shot at his home. No arrests have been made. His grandson Nathan Carman was a suspect.

Carman accompanied his mother on a September fishing trip from South Kingstown, Rhode Island. Their boat sank. The mother wasn't found afterward. But Carman was found off the coast of Martha's Vineyard.

Carman says he doesn't know what happened to his mother. He denies involvement in his grandfather's killing.