DELPHI, Ind. -- Day four of testimony in the Delphi double murder trial is set to continue on Tuesday. Richard Allen is accused of killing teenagers Abby Williams and Libby German near a hiking trail back in 2017. On Monday, juror had to face horrific images of the crime scene.

The graphic pictures shocked the court room and the jury. Some photos showed a close up of Libby's slashed throat and bloody face. The jury was clearly uncomfortable with seeing the images and there were audible gasps in the courtroom. The families of Libby and Abby were also in the gallery crying.

Tuesday’s testimony in the Delphi murders trial included contentious cross examination of the lead crime scene investigator. Richard Allen faces four counts of murder in connection with the February 2017 deaths of Abby Williams and Libby German near the Monon High Bridge.