(ANSA) - ZAGREB - Two powerful 'barons' of the Croatian football, the controversial president of the Zagreb-based Dinamo soccer club, Zdravko Mamic, and his brother Zoran, coach of the Croatian team, are in custody since last night, being under investigation for corruption and tax fraud. The Croatian Serious Fraud Office (USKOK), special unit of the judiciary, announced that, according to initial investigations, Zdravko Mamic is supposed to have hidden, in many illegal ways, about 15 million euros belonging to Dinamo, and to have escaped taxes amounting to another 1.5 million euros. According to press reports, in 2008 the Mamic brothers are supposed to have earned huge sums in commission payments from the sale of Croatian football players to foreign clubs. Local media mentioned, moreover, Luka Modri's sale to Tottenham, 21 million euros without paying taxes. Among the suspects are also Damir Vrbanovi, Dinamo former executive manager and now executive director of the Croatian Football Federation (HNS), and a Treasury employee that is supposed to have helped them escape taxes in exchange for bribes. Zdravko Mamic, known for being bad-tempered, quite vulgar, and 'very nationalist', has denied all charges, crying at the trial as being fake, commanded by politics and by the prime minister himself, who - he declared - aimed ''at deleting me from the Croatian football''.(ANSA).