In Pakistan, 47 people were killed as gunning down of a MQM lawmaker sparked bloody rioting in Pakistan's port city of Karachi. Protesters went on a rampage torching vehicles, shops and houses. Over 123 people were injured in the violence which began last night after motorcycle-borne unidentified gunmen shot dead Syed Raza Haider, a senior leader of the Muttahida Qaumi Movement and a member of the Sindh assembly, his bodyguard and a MQM worker.The killing infuriated Mohjahirs, who form the majority in this city, as they forced downing of shutters and attacked establishments belonging to the Pushtans. There were reports of gunfire erupting in parts of the city.The violence continued in the city this morning too as protesters set on fire dozens of vehicles, petrol pumps, shops and houses as police and paramilitary forces struggled to gain control of the city.Interior Minister Rehman Malik said the killing will be probed jointly by police and intelligence agencies. Most shops and commercial areas remained shut. No group has claimed responsibility for Haider's killing.However, Malik said the Sipah-e-Sahaba and Tehrik-e-Taliban Pakistan were behind the violence in Karachi that is aimed at destabilising the country.The MQM leadership has directly blamed the Awami National Party which represents the Pakhtoons for Haider's killing.