Credit of foreign extradition detention against custodial sentence

The Federal Court of Justice (5th Criminal Senate) dismissed the defendant's appeal as unfounded but modified the judgment to credit 1:1 all time served in Hungarian extradition detention against the imposed custodial sentence, ordering the defendant to bear the costs of the appellate proceedings and necessary expenses of the auxiliary parties. This decision resolved a criminal appeal against a conviction by the Berlin Regional Court, specifically addressing the legal treatment of foreign detention periods in the calculation of the final term. The decisive legal basis was the principle of proportional credit for foreign detention, mandating that time spent in custody during extradition procedures be deducted from the German sentence at a full ratio, effectively correcting the original sentence calculation without overturning the underlying conviction.