Mumbai: Key Indian equity market indices opened in the red on Friday following decline in crude prices and Asian markets trading lower on account of the pending Bank of Japan's decision on monetary policy. Hopes of passage of the crucial goods and services tax (GST) Bill next week managed to balance the decline to some extent. The 30-scrip Sensitive Index (Sensex) was trading 17.01 points or 0.06 per cent lower during the early session. The wider 51-scrip Nifty of the National Stock Exchange (NSE) was also trading 3.10 points or 0.04 per cent lower at 8,663.20 points. The BSE Sensex, which opened at 28,232.87 points, was trading at 28,191.61 points (at 9.16 a.m.) in the early session, lower 17.01 points or 0.06 per cent from the previous day's close at 28,208.62 points. The Sensex touched a high of 28,233.47 points and a low of 28,188.38 points in the trade so far.