SEBI analysts flagged 24,600-24,800 as Nifty's key zone. A breakout above 24,800 may drive the index to 25,000, while a fall below 24,600 risks a slide to 24,250. FIIs sold Rs 1,304cr Friday, keeping sentiment weak. Traders are advised to stay cautious, with autos in focus after GST cuts boosting sectoral outlook.