** Shares in Italy's Brunello Cucinelli BCU.MI extend Thursday's losses after a report by short seller Morpheus Research over the company's Russia business
** Stock down over 5% at 0900 GMT; suspended several times for volatility and down as much as 9% in early trade
** Cucinelli rejected the report that it is still conducting substantial business in Russia, saying its reduced activities in the area are in full compliance with European Union regulations
** Its shares dropped 17% on Thursday - their biggest one-day drop ever
** "The market still wants clarity on the Russia issue from the company, which risks losing credibility," a local trader says
** Brokerage Equita notes that "potentially most troublesome element" in the report is "the allegation that Brunello Cucinelli circumvented the EU import limits in Russia"
** Still, Equita says the report was at times "biased and unfounded"
** It adds that some other issues brought up in the report, such as Cucinelli's high inventory or its products being discounted at third-party retailers, are well known to the market or the company's common practice
(Reporting by Philippe Leroy Beaulieu, Andrea Mandala)
((Philippe.leroybeaulieu@thomsonreuters.com))