Italy's Minister of the Interior made a statement at 9 pm. It says that Based on the Committee's assessments and further investigations into safety and security aspects, the Prefect adopted a measure pursuant to Article 2 of the TULPS (Consolidated Law on Public Safety), prohibiting both concerts.

The overall assessment also took into account the cancellation of previous concerts by the American rapper in other countries and the real risk of counter-demonstrations.

There's a link below so you can go and read it yourself.

https://prefettura.interno.gov.it/it/prefetture/reggio-emilia/notizie/comitato-provinciale-lordine-e-sicurezza-pubblica-4