The BSE Sensex and NSE Nifty-50 indices closed in the red on Tuesday with the Sensex down 0.87% at the 79,956 mark, and the Nifty-50 down 0.85% at 24,139 level. Low-priced stocks locked in the upper circuit are CIAN Agro Industries & Infrastructure Ltd, Lippi Systems Ltd, Sunil Healthcare Ltd, Alan Scott Enterprises Ltd and Faalcon Concepts Ltd.