The BSE Sensex today declined nearly 106 points in early trade as the investor sentiment continued to be weak on the Union Budget failing to bring cheer to markets.The 30-share index which had lost over 453 points in the last two trading days, moved down further by nearly 106 points, to around 17,360 in early trade.On similar lines, the broad-based National Stock Exchange Nifty declined by 30 points, to nearly 5,288.