An 18-year-old Frankfort man is facing a serious felony charge after police say he sexually assaulted a concertgoer at Tinley Park's Credit Union One Amphitheatre during a July show. The investigation began when hospital staff in Ohio reported the victim, and detectives say months of work led them to identify a suspect. That suspect, named by police as Roman Basso, was arrested Jan. 6 and is now charged with aggravated criminal sexual assault.
Arrest and charges
Tinley Park Police told FOX 32 Chicago that Basso, 18, of Frankfort, was taken into custody on Jan. 6 and hit with one felony count of aggravated criminal sexual assault. According to FOX 32 Chicago, he appeared in court on Jan. 7 and is due back at the Bridgeview Courthouse on Jan. 30.
Investigation and evidence
As reported by Patch, the case landed on Tinley Park detectives' desks on July 24, 2025, after hospital staff in Ohio notified local authorities about the alleged assault. From there, detectives spent months tracking down leads and assembling evidence.
Patch reports investigators reviewed surveillance video supplied by Live Nation, interviewed witnesses, and conducted a forensic interview that they say supported the victim's account. Detectives also coordinated with Indian Hill and Arizona State University police to confirm Basso's identity. According to police, Basso gave a post-Miranda confession while in custody.
Where the alleged attack happened
Police say the assault took place during the Wiz Khalifa and Sean Paul Good Vibes Only tour stop on July 22, 2025, at the Credit Union One Amphitheatre in Tinley Park, a date confirmed on the venue's event page. News reports say surveillance video from inside the amphitheatre was among the key pieces of evidence reviewed by investigators.
Legal context
Basso is charged with aggravated criminal sexual assault, which Illinois law classifies as a serious offense. State sentencing rules say a Class X felony, the level often applied to aggravated criminal sexual assault, carries a determinate prison term of at least six years and up to 30 years, with the possibility of extended terms. That framework is laid out in state statutes summarized under Illinois law.
What's next
According to FOX 32 Chicago, Basso appeared in court on Jan. 7 and is scheduled to return on Jan. 30. Tinley Park Police publicly thanked their detectives and partner agencies for help on the case, and prosecutors are expected to decide how to proceed with formal charges before that next hearing. All allegations remain accusations at this stage and will be addressed in court.
