Turkish media on October 21 focused on the escalating investigation into the Istanbul Metropolitan Municipality (İBB). In the morning, reports emerged of a CHP-related corruption investigation and an indictment against Aziz İhsan Aktaş's organization, with a probe into Ali Mahir Başarır. This followed previous days' reports on the "Aziz İhsan Aktaş" investigation. By the late afternoon and evening, the investigation broadened significantly, with Gerçek Gündem and Medyascope reporting that over 210 İBB employees were called for questioning. Yeni Akit later reported over 200 detentions. Concurrently, the Mattia Ahmet Minguzzi murder case saw two suspects sentenced to 24 years, and the UN warned that a Gaza ceasefire was crucial to avert famine, as reported by Daily Sabah.