By JIM SUHR
AP Business Writer

ST. LOUIS (AP) -- Charter Communications Inc., the nation's third biggest cable television system operator, said Tuesday its fourth-quarter loss widened to $340 million, citing higher programming and service costs, increased interest expense and a lower income tax benefit.

The company, which is controlled by Microsoft Corp. co-founder Paul Allen, also announced its co-chief financial officer, Derek Chang, will step down in April.

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