ISTANBUL The Istanbul Chief Public Prosecutor’s Office has summoned 27 people whose university diplomas were revoked, along with city’s mayor Ekrem İmamoğlu ’s degree, as part of a probe into alleged document forgery. The investigation was launched following anonymous tips and a report by Türkiye ’s Council of Higher Education (YÖK), which pointed to irregularities in İmamoğlu’s diploma , suggesting it may have been forged. The mayor, who has denied all accusations, has already given his