NEW YORK (Bloomberg) — Bermuda-based Global Crossing Ltd., the fibre-optic company that went through one of the largest US bankruptcies, said its first-quarter loss widened because of higher network costs and interest expenses.The net loss expanded to $121 million from $109 million a year earlier, the company said in a statement distributed by PR Newswire yesterday. Sales rose 11 percent to $504 million, exceeding a $489.9 million average of two analyst estimates.