Joint investigation teams from intelligence agencies and Islamabad police have identified and located the culprits and the mastermind involved in a suicide attack at the Islamabad district courts, but the arrests are yet to be made, sources told Online.President Pervez Musharraf and Prime Minister Shaukat Aziz have been informed about this development. The suspects are expected to be arrested in a couple of days, according to sources. Investigations suggest that there were three suicide attackers involved in the attack. Intelligence agencies report that the attackers are from Kohistan.