(ShareCast News) - Shares in AIM-listed multi-sector investment company Polo Resources are down more than 6% as it noted that the shares of investee company Blackham Resources have been suspended.It said it would continue to monitor the situation and update the market in due course.Press reports suggested Blackham was undertaking a fundraising, said Polo, which has interests in oil, gold, coal, copper, phosphate, iron and vanadium.At about 14:45 GMT, shares in Polo were down 6.41% to 6.06p each.