''The trading halt could be related to BC Iron's second-largest shareholder, Regent Pacific, who could be seeking a larger stake or levelling a bid itself for the business. If so, again the price paid would be of interest to us.'' Fortescue did not enter a trading halt yesterday and lost some of its gains from Tuesday when an impressive production report raised the share price by 8 per cent. The shares yesterday fell 8¢, or 1.1 per cent, to $7.19. The joint venture between BC Iron and Fortescue could complicate any moves by Regent Pacific to acquire the junior miner. BC Iron and Regent Pacific refused to comment.