Navalnywaspoisonedlastsummerwith a chemicalweapon, andAmericanintelligenceofficialsbelieve a securityagencyoftheRussiangovernmentwasbehinditbyimposingsanctionsonRussia.
But a spokesmanfortheRussiangovernmentcalledtheaccusationoutrageous, sayingthesanctionswerenothingmorethaninterferenceinRussia's internalaffairsandsuggestingthey'd onlyworseninternationalrelationswithRussia.
ThenationisholdingAlexeyNavalnyin a detentioncentre, though, accordingtoNavalny's lawyer, andRussiaisapparentlyplanningtotransferhimto a penalcolony, a remotesettlementforprisoners.
PolicedetainNavalnymomentsafterhearrivedbackinMoscow, Russia's federalpenitentiaryservice, the F.
S.
I n, accusedtheoppositionleaderofviolatingthetermsofhisprobationin a 2014 fraudcase.
After a heatedhearinginFebruary, a MoscowcourtruledtoreplaceNavalny's 2014 suspendedsentencewith a jailsentence, sendinghimtoprisonformorethan 2.5 years.
TheKremlinhasoftencondemnedNavalnyas a dangerousthreattothecountry's stabilityandhasrejectedhisallegationsofwidespreadhighlevelcorruption.