KARACHI – Three senior leaders of Muhajir Qaumi Movement-Haqiqi, including party’s vice-chairman Zafar Kaim-khwani, were killed when unidentified attackers raked a taxicab they were travelling by with bullets in Landhi area of Karachi on Thursday. Four more people were killed in other violence incidents in the  city. MQM-Haqqiqi chief Afaq Ahmed condemned the killings of his party leaders, and swore vengeance on their attackers. Accompanied by MQM-H central cabinet members, Aleem Khan, 53, and Abdul Qadir Gilani, Zafar Kaimkhwani was on his way to attend a meeting from his residence in Sher Pao Colony, when unidentified attackers targeted him, MQM-Haqiqi spokesman Khalid Hamidi said. As their car had broken down, the three party leaders boarded a taxi to reach the venue of the meeting, unaware of the fact that they were being chased, police officials said, adding that as the cab reached near Mansehra Colony, one of the attackers, attired in police uniform, flagged down the vehicle, while his associates sprayed the car with bullets, after killing the driver at point-blank range. The three wounded Haqiqi leaders were ferried to Jinnah Postgraduate Medical Centre, where doctors pronounced them as brought dead, the officials said. A formal investigation was launched under a committee headed by DSP Kamal Mangan into the brazen attack. Mangan said eleven empty bullets were recovered from the crime spot, and confirmed that one of the attackers was wearing a police trousers and a cap, but was not in complete uniform. Talking to a group of reporters at the hospital, MQM-Haqqiqi chief Afaq Ahmed blamed the allies of the ruling PPP for killing innocent people in Karachi. At least 9,000 citizens had so far been killed in their turf war, he added. Ahmed further said his party would announce its future strategy if the government could not take any action against the culprits trying to sabotage peace of the port city. In Gulshan-e-Iqbal area, a couple was shot dead by unidentified armed men. According to police officials the victims, namely Iqbal Hussain, 33, and his spouse, Dilshad Fatima, 27, were on their way to a clinic on a car, when the attackers intercepted their vehicle and sprayed them with bullets. As a result, they died on the spot. A police party rushed and shifted the bodies to Abbasi Shaheed Hospital for autopsy. The officials believed that the couple was killed over sectarian basis. Later, the bodies were handed over to the heirs.Separately, a man was mowed down in SITE area. Identified as Allah Ditta, 60, son of Ramzan Jan, the victim was on his way to his workplace when unidentified culprits appeared on the scene and opened fire on him. He received several bullets and died instantly. The body was shifted to Abbasi Shaheed Hospital for post-mortem and later handed over to the heirs. Police officials suspected that Allah Ditta might have been killed over a personal dispute.