Some people in old city should definitely know who is the culprit.The people who carried out terrorists acts needs shelter and support. The people who carried out the blasts are either linked to under world based in Pakistan or Dubai or linked to terror outfits in Pakistan or Bangladesh. All indian muslim are good and love india.These foreign elements who has come from abroad should be exposed by the indian muslims and handed over to the police. One or two persons locally have definitely provided them logistics support. About 12-13 person out of 42 killed are innocent muslims.Hence the indian muslims expose these foreign infiltrators