Sean Kratz is charged with killing three of the men with his cousin, Cosmo DiNardo, and burying their bodies in a Bucks County farm in July 2017.
After a few hours of deliberating on Wednesday, the jury returned to the courtroom to ask the judge a few questions about the murder counts and if they could watch Kratz's confession video again.
Just before 5 p.m. the jury also asked about the definition of "abuse of a corpse" and "conspiracy."
Kratz, 22, of Philadelphia is charged with homicide, conspiracy, abuse of a corpse and other crimes in the deaths of Dean Finocchiaro, 19, of Middletown Township, Tom Meo, 21, of Plumstead Township, and Mark Sturgis, 22, of Pennsburg.
Timeline in disappearance of 4 young men in Pennsylvania
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DiNardo already plead guilty to killing the men with Kratz and shooting 19-year-old Jimi Patrick of Newtown Township.
Prosecutors allege Kratz shot Finocchairo in a barn and helped DiNardo murder the other two.
Last week, jurors heard taped confessions played in court of Kratz admitting to shooting Finocchiaro. The confession was recorded during a plea agreement Kratz initially agreed to last year but then rejected.
Kratz's attorney claims his client has a low IQ and was just too terrified to do anything that would have stopped DiNardo.
Kratz could face the death a penalty if convicted.
Victims' families react Cosmo DiNardo's plea, Sean Kratz's rejection of plea deal
Kratz rejects plea deal in Bucks murders; DiNardo pleads guilty
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VIDEO: Cosmo DiNardo arrives at Bucks Co. prison
VIDEO: Cosmo DiNardo arrives at Bucks County prison