(Telecompaper) Italy's antitrust and competition authority, AGCM, has announced the expansion of an investigation launched last summer into possible abuse by Telecom Italia (TIM) in the expansion of its fibre-optic broadband network to underserved and rural areas across the country. The watchdog said it's now probing whether TIM had tried to set wholesale prices for operators seeking broadband access that might obstruct competition. In a statement, the AGCM also said it's looking into possible anti-competitive behaviour by TIM on the retail broadband market via the use of privileged information it had obtained as the dominant network operator.