The income-tax department has started a crackdown on “suspicious” bank lockers after searches and raids revealed that these were being used to stash illegal cash and jewellery. Tax officials were seeking details of lockers operated multiple times, especially in co-operative banks, after the government announced the recall of `500 and `1,000 banknotes on November 8, sources said. “Benami bank lockers are being monitored to check ownership as these have been used for illegal activities and hoarding illegal cash and wealth,” a government official said. “However, it must be re-iterated that it is aimed at addressing the black-money issue and there will be no sealing of bank lockers, as we have already said.” A benami, or ghost, locker is operated by someone other than the person in whose name it is issued. There have been instances when a holder has agreed to keep cash or jewellery for a family member, an acquaintance or even a senior at work. Large quantities of cash — Rs.600