Pakistani authorities have formed special task forces to crack down on 17 radical groups, including the Jamaat-ud-Dawah and Lashker-e-Taiba, in the wake of the suicide attack on the Data Darbar shrine. <br/><br/>The Home Department of Punjab has set up the task forces comprising officials of the Crime Investigation Department, Special Branch and Anti-Terrorism Squad in several districts of the province. <br/><br/>A report by BBC Urdu service said, the groups against which action will be taken include the JuD, LeT, Jaish-e-Mohammed, Lashkar-e-Jhangvi, Sipah-e-Sahaba, and Tehrik-e-Nifaz-e-Shariah Muhammadi, among others. Nine of the groups belong to the hardline Deobandi sect, three are Shia organisations while three are influenced by the ideology of Ahl-e-Hadith. <br/><br/>Meanwhile, Interior Minister Rehman Malik has said the Taliban and al Qaida are working with the Lashkar-e-Jhangvi and Sipah-e-Sahaba in parts of the country, especially Punjab. About 4,000 people are currently under surveillance under the provisions of the Anti-Terrorism Act for alleged links with extremist groups. They have to inform police stations in their areas about their movements.