BENGALURU/KODAGU: Three days after the sloganeering by 19-year-old college student Amulya Leona Noronha at an anti-CAA rally and her subsequent arrest on charges of sedition kicked up a storm, Karnataka minister BC Patil on Sunday advocated central legislation that enables authorities “to shoot at sight” those chanting pro-Pakistan slogans.Responding to reporters’ queries on the ongoing fracas over the chants, Patil said he would appeal to PM Narendra Modi to bring in a law so that anti-national elements are “killed on the spot”.“The Centre must promulgate a law that enables authorities to shoot those who do anything that is seen as anti-national and chant pro-Pakistan slogans,” Patil said. “These elements must be killed on the spot. I am appealing to the PM, through the media now, to bring in such a law. I will also write to the Prime Minister.”Meanwhile Union minister DV Sadananda Gowda echoed Karnataka home minister Basavaraj Bommai ’s line that stringent action will be taken against those indulging in anti-national activities, saying there will be “no mercy” for those taking a pro-Pakistan stance.