A jury on Wednesday returned a verdict of death against a man convicted of fatally stabbing a mother and her teenage daughter and nearly killing another teen in 2015.

Following a day-long hearing, the jury decided about 8:15 p.m. Wednesday that Leeton Thomas should face the death penalty.

Thomas, 40, will be formally sentenced Friday morning by Lancaster County President Judge Dennis Reinaker.

Thomas killed Lisa Scheetz and her 16-year-old daughter and nearly killed Scheetz' 15-year-old daughter in an early-morning attack inside Scheetz's Spring Valley Road home. The younger teen sustained 10 stab wounds. One wound to her chest was so severe that a portion of her bowel was protruding from it,

The attack was designed to rub out witnesses against Thomas in an upcoming child molestation trial, prosecutors have said.

Thomas was convicted Tuesday afternoon of two counts of first-degree murder, attempted murder, and burglary after jurors deliberated just under three hours.

Jurors deliberated the sentence for four hours Wednesday.

Pennsylvania has not executed an inmate since 1999.

First Assistant District Attorney Christopher Larsen, who won the conviction, outlined five "aggravating factors" for the jury to consider when deciding Thomas' fate.

They were that Thomas:

Killed witnesses

Committed the killing during the commission of another crime, burglary

Killed multiple people

Broke a court-ordered no-contact order during the killings

Presented a grave risk to another individual beyond those he killed.

Jurors opted for the death penalty over the other option: life in prison without parole.