(Courtesy DAWN)Pakistani authorities barred opposition politician Imran Khan from entering Karachi on Thursday because he has called for a boycott of upcoming elections, officials said. Former cricket legend Khan was put back on a plane to Islamabad after officials prevented him from entering the southern province of Sindh, of which Karachi is the capital, Sindh home minister Akhtar Zamin said. “We do not want anything to disrupt the elections. That is why have sent him back,” Zamin told AFP. “If he does not want to contest elections, it is fine, but he should not incite other people to do so. He will be welcome to visit Sindh after elections.” “It is for the third time that Imran Khan had been externed from Karachi and it is highly condemnable,” Khan's party secretary general Arif Alvi told AFP.