Two sisters in Florida have been convicted of killing their father when one of them recognized a man who both had a relationship four years later.

Linda Roberts, 62, and Mary-Beth Tomaselli, 63, were arrested Tuesday and accused of first-rate murder in the 85-year-old death of 85-year-old Anthony Tomaselli, according to a statement from the Pinellas County Sheriff’s Office.

“This is in some respects – as we sometimes call these things – it’s the perfect murder, because there was absolutely no sign of struggle, no sign of foul play,” said Pinellas County Sheriff Bob Gualtieri at a press conference. “He had cancer, he had dementia, he was seriously ill … They could easily have gone away with it.”

Deputies were called on March 6, 201

5, to a home in Palm Harbor, where they found that Anthony Tomaselli did not respond and attempted CPR, police said Linda Roberts was accused of first-degree murder for killing his father Anthony Tomaselli ” width=”180″ data-mycapture-src=”” data-mycapture-sm-src=””/>

Linda Roberts was accused of first-degree murder for alleged killing his father Anthony Tomaselli (Photo: Pinellas County Sheriff & # 39; s Office)