Indian authorities raid BBC offices after broadcast of Modi documentaryIncome Tax department officials are conducting 'surveys' at the BBC offices in Delhi and Mumbai, reports said. This comes amid a raging controversy over a BBC documentary on the 2002 Gujarat riots. The MEA had criticized the documentary as a propaganda and lacking objectivity.The synchronised action began at 11am with I-T officials reaching the BBC offices on KG Marg in Delhi and at Kalina Santacruz in Mumbai. BBC staffers were asked to deposit their phones at a particular spot inside the premises, officials said.The impounded mobile phones and laptops/desktops of some staffers the account and finance department will be handed back after a back-up is taken, sources said. The department is looking at documents related to the business operations of the London headquartered public broadcaster and its Indian arm, they said. The investigation is linked to international taxation issues of BBC subsidiary companies, sources indicated. BBC News said it was fully cooperating with India's income tax authorities at its offices in New Delhi and Mumbai.