(KUNA) -- Police has arrested eight Al-Qaeda linked militants who had planted pairs of rockets in the heavily guarded capital of Pakistan, said a minister on Friday. Federal Interior Minister, Aftab Ahmed Khan Sherpao, talking to newsmen here said that the militants had planted a pair of Russian-made Anti-tank shells, having range of 7 to 8 miles, in the Ayub Park of Rawalpindi city and two near ISI headquarters and the parliament building in Islamabad.He said the militants have links with Al-Qaeda network, adding that they had received training from Afghanistan. The Minister said that the aim of the terrorist activity was not to target the government rather to threaten the government. He added that the investigations are underway and more arrests are expected. Few days ago, one rocket of a pair exploded in Ayub Park in Rawalpindi near the official residence of President Pervez Musharraf. However, there was no life loss. The very next morning, two more rockets were found near the Parliament House, only two kilometers from the Convention building where the President was addressing a gathering. Tow days later, another pair of same kind of rockets was also found near the ISI headquarters.