ROME Dec 21 Italy's communications authority
(AGCOM) said on Wednesday it had opened an investigation into
Vivendi's stake building in Mediaset, after the
Italian TV broadcaster made a complaint.
AGCOM said it was looking into the matter with regard to
Italian anti-trust regulations which prevent companies from
having an excessive share of the domestic telecommunications and
French media giant Vivendi, which is Telecom Italia's main
shareholder, has rapidly built up its stake in Mediaset
from 3 percent to more than 25 percent.
(Reporting By Gavin Jones)