The Centre has extended the ban on controversial Islamic preacher Zakir Naik's Islamic Research Foundation (IRF) for another five years under UAPA. The decision comes a day before the existing prohibition was due to expire, following Republic's undercover investigation. The Ministry of Home Affairs (MHA) on Friday extended the ban on controversial Islamic preacher Zakir Naik’s Islamic Research Foundation (IRF) as an unlawful association for a period of another.