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SAO PAULO, Oct 3 (Reuters) - Brazil's TIM Participações SA hired Banco Bradesco's investment banking unit to analyze a potential bid for rival Grupo Oi SA , a source with knowledge of the situation told Reuters on Friday.
TIM Participações, the Brazilian wireless carrier controlled by Telecom Italia SpA, and Bradesco declined to comment.
Reporting by Guillermo Parra-Bernal; Editing by Meredith Mazzilli