Another day, similar story. Benchmark indices moved in a wide range to end almost flat on Tuesday amid concerns over Omicron variant of the coronavirus. Traders turned cautious after Moderna CEO in an interview said vaccinations may gradually become less effective against the latest variant. WHO has also termed it as a variant of grave concern. The 30-share pack Sensex fell 195.71 points or 0.34 per cent to close at 57,064.87. The index gyrated in nearly 1,120-point range. Its broader peer NSE Nifty declined 70.75 points or 0.41 per cent to 16,983.20.