nice/moscow french judge put russian businessman lawmaker suleiman kerimov whose interest kremlin pledge defend formal investigation wednesday arrest link french tax evasion case prosecutor say investigation step often always lead trial french legal system open suspicion aggravate launder tax fraud proceed crime carry prison sentence 10 years judge decide kerimov could release detention turn passport could leave alpes-maritime county nice also order post bail five million euros 5.9 million check police several time per week kremlin say early would spare effort defend right kerimov 51-year-old billionaire arrest monday night french riviera resort city nice share polyus russia big gold producer control kerimov family fell news detention everything power protect lawful interest kremlin spokesman dmitry peskov tell conference call reporters intensive work undertake foreign ministry prosecution request kerimov keep custody decision judge expect soon second person also put formal investigation representative kerimov upper house russia parliament sit lawmaker decline comment case wednesday contact reuters polyus also decline comment russia state-run rossiya 24 tv station cite unnamed source report kerimov deny guilt immediately clear lawyer hire represent kerimov france low house parliament lawmaker rizvan kurbanov ask russian foreign ministry make representations kerimov behalf french authorities still receive french authorities explanation reason detention colleague kurbanov tell parliament testify unprecedented demarche french say add hop russian foreign ministry would issue formal protest share polyus fell percent early trade moscow wednesday recover grind close 1.25 percent originally mainly muslim russian region dagestan kerimov build lucrative natural resources business combination debt appetite risk political connections own top flight soccer club anzhi makhachkala sell 2016. kerimov fortune peak 17.5 billion 2008 slump billion 2009 accord forbes magazine due so-called margin call assets trigger 2007-2009 global financial crisis march year russian president vladimir putin sign decree give kerimov state award service fatherland second class contribution russian parliamentary life french police arrest kerimov nice airport monday even french judicial source say investigation center purchase several luxury residences french riviera via shell company something could enable kerimov reduce tax owe french state 0.8465 euros russian billionaire investigation france