New Delhi, Sept. 18 -- The Enforcement Directorate (ED) on Thursday carried out raids in four states including Delhi, Jharkhand, Bihar and Karnataka in connection with a money laundering probe linked to a petrol bomb attack at the Rashtriya Swayamsewak Sangh (RSS) state office in Ranchi's Nirvanpur area in June, people familiar with the development said. Pakistan-backed terror group Shahzad Bhatti Network (SBN) is under the scanner for their alleged involvement in the case, the people cited above added. It is allegedly run by gangster-turned-terrorist Shahzad Bhatti, 45, a resident of Lahore, currently believed to be in Dubai. Intelligence officials said he is backed by Pakistan's Inter-Services Intelligence (ISI), operates from different l...