An Assam minister allegedly threatened to “vanish” two journalists of separate news channels for reporting a controversial poll speech of his wife, prompting the Congress to demand that his candidature for the assembly election be cancelled. A complaint has been filed by one of the journalists at Jagiroad police station in Morigaon district against Minister of State for Health and Family Welfare, Pijush Hazarika, but an FIR is yet to be registered, police said.