Snapping a two-session rally, the BSE benchmark index Sensex on Friday fell by 82 points to close at 17,748.69, on disappointing industrial output growth.

The Sensex, which had gained over 208 points in the last two trading sessions, fell by 82.06 points, or 0.46 per cent, to 17,748.69, after dismal industrial production hit the investor sentiment.

Factory output as measured by the Index of Industrial production grew by a mere 1.8 per cent in December, 2011, due to contraction in mining and capital goods sectors and a lower manufacturing sector growth.

Global markets also exhibited weak trends after European leaders held back a debt bailout for Greece pending a parliamentary vote on an austerity plan.

The broad-based National Stock Exchange index Nifty also fell by 30.75 points, or 0.57 per cent, to 5,381.60 as investors booked profits from recent gains.