Police in Niš have arrested one suspected attacker over an attack on a 17-year-old outside the National Theatre, with authorities ordering pre-trial detention. The arrest came after more than a month. The prosecution ordered custody for up to 30 days for a 40-year-old man from the area of Bojnik, accusing him of violent behaviour at a public gathering. The incident was reported on 9 October, around 8 pm, during a promotional event connected to an SNS gathering near the theatre. Prosecutors confirmed the event took place. The victim’s father, a well-known theatre actor in Niš, said the attack involved more than one person, alleging five large men in masks approached as the teen waited to enter a show as part of the festival “Theatre at the Crossroads.” He said the attackers took the teenager’s phone and forced him to delete photos. He also complained that the boy has been repeatedly required to attend investigations even after the arrest, and that he believes more suspects were involved, including those who allegedly organized the attacks and sent people in black to intimidate others outside the theatre. Prosecutors said they identified only one attacker in the case so far, while questions remain about the rest of the group. As of now, the 40-year-old suspect is held in pre-trial detention for up to 30 days, and the investigation is continuing.