The BSE benchmark Sensex maintaining its initial losses, stood in red by over 200 points in the afternoon trade due to sustained selling pressure from investors on profit booking amid weak cues from Asian equity markets.The 30 share index which had declined by 233 points to 17,252 in its previous session stood 206 points down in the negative territory to 17,279 a short while ago.Similarly, the wide-based National Stock Exchange index Nifty tumbled by 68 points to 5,254