The former union minister demanded an enquiry against Gandhi and said he should be directed to issue an unconditional apology to Shah and the Lower House. In his three-page letter to Lok Sabha Speaker Om Birla submitted under Rules 222 and 223, Thakur said Gandhi violated Rules 352 and 353 by using unparliamentary language and making grave allegations against Shah. "He has conducted and behaved in the House in such a manner that it was obstructive in proper discharge of function of members of Lok Sabha individually and collectively as a House. He also did no follow the repeated instructions of the Hon'ble Speaker of the House," Thakur said. ALSO READ:'Can't hide behind closed doors': Kharge lambasts PM Modi, Amit Shah over July 20 incident in Delhi