India, Feb. 22 -- Indian equity benchmarks added more losses in late morning session, with both Sensex and Nifty witnessing sharp fall, as bears held tight grip over the Dalal Street. Domestic sentiments were pessimistic, despite positive cues from other Asian markets. Traders were cautious, amid reports that ahead of its 'Bharat Bandh' call on February 26, traders' body CAIT wrote to Prime Minister Narendra Modi raising issues related to the GST regime, and alleging violation of e-commerce rules by major e-tailers. In its letter to the prime minister, the Confederation of All India Traders (CAIT) called for setting up of a 'special working group' at the central level comprising senior officials, CAIT representatives and independent tax exp...