In a major development in the controversial Islamic preacher Zakir Naik's case, the Delhi High Court on Thursday dismissed his plea challenging a ban by the Home Ministry on his organisation.

Earlier in February, the Court had set up a Judicial Tribunal to look into banning Zakir Naik's NGO Islamic Research Foundation (IRF) under the Unlawful Activities (Prevention) Act.

A notice had also been issued to IRF to respond to a plea by the Ministry of Home Affairs (MHA) to hold in camera proceedings

The National Investigation Agency had also filed three affidavits in sealed cover before the court giving reasons for the ban on the IRF.

The IRF, earlier moved a petition seeking directions against the ban imposed on it by the central government.

On November 15, the central government had banned the IRF for five years after declaring it as an 'unlawful association' under the anti-terror laws, and the National Investigation Agency (NIA) followed up with raids on its premises in Mumbai on November 19.

According to the Home Ministry, Naik has allegedly made many provocative speeches and engaged in terror propaganda.