It was reported on 10 May 2023 that Paris-based Luxbox acquired the international sales rights to the film and would present it at the
Marché du Film in Cannes. On 5 July 2023,
Critical Zone was announced as a selection for the
Concorso internazionale (international competition) at the
76th Locarno Film Festival. Two days later, Ali Ahmadzadeh was interrogated by the
Ministry of Security and accused of shooting a
pornographic film. He was pressured by the Iranian authorities to withdraw the film from the Locarno competition and was not allowed to travel to the festival. As a result of the film being shot without government permission, his visa to leave the country was revoked. According to Ataeian Dena, Ahmadzadeh has resisted the attempts to pressure him and even refused to appear for questioning. Ataeian Dena said, "He doesn't believe in the censorship rules, he stands up for freedom of speech and art. Like many others, he has given up his fear and is part of the protest movement". In addition, Ahmadzadeh is said to have been banned from working for a long time. The Locarno Film Festival, under artistic director
Giona A. Nazzaro, unsuccessfully called on the Iranian government to immediately release Ahmadzadeh. Ataeian Dena expressed fear that the filmmaker could be arrested after the festival. The film had its world premiere at Locarno on 10 August 2023. ==Reception==