MULTAN,March 13th:Activists of politico-religious party "Jamaat Islami," civil society and lawyers on Saturday observed the day of mourning at the call of Ameer of Jamaat-e-Islami Syed Munawwar Hassan over tragic incidents happened recently in Karachi, Mingora and Lahore – including target killings of Ulema in Karachi on Thursday and suicide blasts in Lahore which killed 57 people on Friday.They staged a demonstration to condemn the growing incidents of bomb blasts and target killing in Karachi .Jamaat Islami leader Liaquat Baloch alleged imperial forces of discouraging the people’s strong determination through terrorism.Every person in Pakistan is grieved over killings of innocent Ulema in Karachi and several people in Lahore and Mingora in three days.He hoped nation to get united to battle anti-state elements. Jamaat-e-Islami Secretary General Liaquat Baloch , Rao Zafar Iqbal, Khurshid Ahmed Kanju, saturday alleged that infamous US security firm Blackwater was behind all terror attacks in Pakistan under the supervision of Interior Minister Rehman Malik.They advised the ruling PPP to give the portfolio of interior ministry to someone else to save it’s standing.The JI leaders alleged that Karachi target killing and Lahore bombings were carried out by Blackwater. The Interior Minister was supervising all the activities of Blackwater across the country, they said. Such incidents, he said, would continue unless the interior minister was removed. The Afghani soil is being used for ‘proxy war’, they said, adding the Unites States now wants to use Afghanistan against Iran