The National Investigation Agency (NIA) is probing the blast near the Israeli embassy in Delhi. New Delhi: Weeks after a blast near the Israeli Embassy in New Delhi, Iran on Monday termed as "unsubstantiated" the allegations of its involvement in the terror attack and called such charges steps towards realising the "sinister intentions" of the enemies of Iran-India ties. The assertion by the Iranian embassy in New Delhi came after a media report claimed that there was Iranian hand in the terror plot but that the bomb was planted by a local Indian Shia module. Referring to the "suspicious blast" in New Delhi on January 29, the Iranian embassy, in a statement, said it "deliberately led to an unfair onslaught and unsubstantiated defamatory accusations against Iran".