HIGHLAND PARK, Ill. — The father of the suspect in the Highland Park parade shooting appeared at another court hearing Monday.

Lawyers confirmed on Monday that Crimo III will not testify in his father’s upcoming reckless conduct trial.

Prosecutors allege that Robert Crimo Jr. was criminally reckless at the time that he helped procure a FOID card for his son Robert Crimo III.

Prosecutors also allege by helping his son obtain a FOID card, Crimo Jr. was a contributing cause to the bodily harm suffered by the homicide victims in the mass shooting that occurred on July 4, 2022.

On Monday, lawyers from both sides argued over the admissibility of text messages and other alleged evidence having to do with Crimo III’s mental health.

Judge George Strickland, among other pre-trail rulings, left the door open to possible testimony from a prosecution witness.

Long before the 2022 Highland Park mass shooting, the witness claims Crimo III put a cap gun to their neck and pulled the trigger. The witness also stated that Crimo III once shared disturbing thoughts about “someday committing a mass murder.”

According to the Lake County State’s Attorney, Crimo Jr. allegedly knew and dismissed the threat.

Monday’s hearing was the final one before Crimo Jr.’s trial begins Monday, Nov. 6.

Robert Crimo III, 21, has been charged and faces 21 counts of first-degree murder — three counts for each of the deceased victims, according to the Lake County State’s Attorney’s Office.

He’s accused of opening fire with an assault-style rifle from a rooftop, killing Nicolas Toledo, 78, Jacki Sundheim, 63, Katherine Goldstein, 64, Irina McCarthy, 35, and Kevin McCarthy, 37, Stephen Straus, 88, and Eduardo Uvaldo, 69.