MUMBAI, March 11 -- After Shiv Sena (UBT) leader Abhishek Ghosalkar was shot dead last month by an assailant who allegedly used his bodyguard's weapon to commit the murder, the Mumbai police launched a drive to verify firearm licences and smoke out illegal ownership of weapons. Officials said that over the last month, 22 arms licenses had been cancelled and over a dozen illegal weapons seized....