US copper futures fell to three-week lows before steadying at slightly lower levels early on Monday, supported by a calmer open on Wall Street following the US government's decision to sue Goldman Sachs Group Inc for fraud. Copper for May delivery down 0.55 cent at $3.5090 per lb by 10:23 am EDT (1423 GMT) on the New York Mercantile Exchange's COMEX division.
Range extended down from $3.5180 to $3.4520, its lowest level since March 29.