KABUL (Agencies) - Afghanistans intelligence agency said on Saturday that it had handed Pakistan evidence that the Talibans leadership plotted the recent assassination of ex-president and government peace envoy Burhanuddin Rabbani on Pakistani soil. The interior minister, giving testimony in parliament, also said that a master-mind of the plot - Hameedullah Akhondzada - had been arrested. The minister said Pakistans spy agency, the Directorate of Inter-Services Intelligence (ISI), played a role in the killing. Rabbani, who was head of the High Peace Council charged with trying to reach a negotiated settlement to the war, was killed at his Kabul home by a suicide bomber claiming to be carrying a message of peace from the Taliban leadership. Without any doubt Pakistans ISI hand has been involved, Interior Minister Bismillah Mohammadi told lawmakers on Saturday, while discussing Rabbanis killing. We have detained Hameedullah Akhondzada who confessed that it was nothing but a plot, he added. Mohammadi said a fact-finding mission was leaving for Pakistan on Saturday to investigate further, and Islamabad had been given a list of those involved. A spokeswoman for Pakistans Foreign Office, Tehmina Janjua, said Pakistan had not received any information although Prime Minister Yousuf Raza Gilani had conveyed to Afghan President Hamid Karzai an offer of cooperation in the investigation. Pakistans offer to investigate stands. As yet, no dossier has been received, she said. Akhondzada has been named by the Afghanistans National Directorate of Security (NDS) but it has given no details of his identity. Acting NDS chief Rahmatullah Nabeel also said that Akhondzada had been detained, but gave no details. The NDS spokesman, at a separate news conference said that the mid-September suicide bombing that killed Rabbani, the governments top peace negotiator, was plotted in an upmarket suburb of the Pakistani city of Quetta. A confession from those we detained in regard to Rabbanis assassination shows a direct involvement of the Quetta Shura, NDS spokesman Lutfullah Mashal said, adding that one of those arrested was a key player in the plot to kill Rabbani. (He) provided evidence and documents which we have submitted to the Pakistan Embassy. Based on mutual cooperation and diplomatic ties with Afghanistan, Pakistan is obliged to take action, he told a news conference in the Afghan capital. Rabbanis assassination was plotted in Quettas Satellite Town, an expensive area home to many officials and the citys elite, Mashal added. He said a commission had been set up to investigate the killing, and further details would be given soon. Hours after Rabbani was killed, a spokesman for the Taliban claimed responsibility for his death when talking to a Reuters reporter in Pakistan from an undisclosed location. However, the spokesman later issued statements denying that he had made a claim of responsibility and said the Taliban were not willing to comment on Rabbanis assassination. Agencies adds: Afghan President Hamid Karzai has said trying to talk peace with insurgents is futile and that neighbouring Pakistan not the Taliban needs to be the other party in the peace talks. The presidents remarks came on a video recording that his office released on Saturday. Karzai has been pushing for years to reconcile with the Taliban. He said that effort is no longer viable since a suicide bomber claiming to be a peace emissary from the Taliban killed former Afghan President Burhanuddin Rabbani at his home on Sept 20. Rabbani was leading Karzais effort to broker peace with the Taliban. Karzai believes any negotiations must be conducted with Pakistan since the enemies sanctuaries and operating places are there, the statement said. In the statement, Karzai condemned insurgent attacks launched from Pakistans volatile tribal area that borders Afghanistan. We also condemn the attacks on Nuristan and Kunar from Pakistan, and have asked the Foreign Ministry to use emergency diplomacy and contacts to stop these attacks, the statement said. Speaking in Kabul, Karzai told a group of religious leaders that there were no partners for dialogue among the Taliban and it was not possible to find the Taliban leader, Mullah Omar.