Pakistani opposition politician Imran Khan has been arrested by police after a rally in Lahore.The former cricketer had emerged from hiding to join a student rally against emergency rule imposed by President Pervez Musharraf.Mr Khan, who heads a small opposition party, went into hiding soon after General Musharraf declared a state of emergency on November 3 and rounded up thousands of opposition politicians, activists, lawyers and rights workers.He had been greeted by scores of students shouting "go Musharraf go" when he appeared on the campus of Punjab University.About an hour later he was seen being bundled into a white van and driven off the campus.Malik Mohammad Iqbal, a police official in the city of Lahore, confirmed that he was taken into custody at the gate of the campus.Meanwhile, former prime minister Benazir Bhutto is trying to forge alliance with Islamists and other opposition parties to launch campaign to force Gen Musharraf from power.A senior Bhutto aide, Latif Khosa, said: "She's trying to unite all political parties on a minimum agenda to return the country to true democracy."The minimum agenda is the ouster of General Musharraf and formation of a neutral government of national consensus to organise free and fair elections."© Independent Television News Limited 2007. All rights reserved.