RIODEJANEIRO,Dec11-AmanarrestedbypoliceinRiodeJaneiroonsuspicionofmurderhasconfessedtokilling42peopleoverthepastdecade,makinghimpotentiallyoneofthecountry'smostprolificserialkillers.

SailsonJosedasGraas,26,whowasarrestedonWednesday,toldreportersatapolicestationinthestateofRiothathekilledforpleasureandtheaccompanyingadrenalinerush.Hesaidhealsooperatedasakillerforhire.

Hesaidhispreferredvictimswerewhitefemales,whomhestrangled.Amongthe42victims,39arethoughttobewomen.

Thenewscomesjustmonthsafterasecurityguardconfessedtokilling39people,mostlyhomelesspeopleandtransvestites,intheBraziliancityofGoiania.

"Iwouldwaitforanopportunitytobreakintothehouseandkill,"DasGraastoldreporters,addinghewouldoftenwatchhisvictimsformonthsbeforemakinghismove.

"WhenIdidn'tdoitIwouldgetnervous,thenIwouldgohunting"forothervictims,headded.PolicemadeDasGraasavailableforreporterstoquestioninagive-and-takesessionthat'snotuncommoninBrazil.

DasGraassaidhewouldoftenremovethenailsofhisvictimstoavoidmarksorscratchesfromascuffle.Hesaidhiswifewasawareofthemurders.

Hebeganalifeofcrimeattheageof15snatchinghandbags.At17heallegedlykilledhisfirstvictim.

ExpertssaidDasGraaswaslikelyapsychopathwhoenjoyedthemediaspotlightandwarnedthatwhathesaidshouldbecarefullychecked.

Butpolicesaidtheywereconvincedbyhisaccountandwerecrossreferencinghisconfessionswithpastcrimereports.Fourcrimeshadalreadysuccessfullybeenmatched,theysaid.

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