BRIEF-Spain's OHL confirms talks over possible buyout of Mexican unit
July 26 (Reuters) - Spain's OHL
* Says in preliminary talks with an unnamed investment fund interested in a possible joint takeover bid for its Mexican unit, OHL Mexico
* Says will not under any scenario invest additional funds to buy new shares of OHL Mexico
* Reuters reported earlier on Tuesday OHL was in talks with Australia's IFM over a potential buyout of OHL Mexico Further company coverage: (Reporting by firstname.lastname@example.org)
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