Deutsche Bank and KBC Group NV have frozen some of Radiant World's Singapore bank accounts, while some other banks have suspended credit lines, Bloomberg News reported on Thursday.
Deutsche Bank and UBS beat forecasts again with second-quarter earnings on Wednesday, buoyed by a surge in trading activity and strong retail business as Europe's lenders extend a more than two-year-long recovery.
Germany's largest lender's pretax profit rose 11% from the same period last year and was ahead of analysts' expectations, according to a company-compiled consensus.
Deutsche Bank on Wednesday posted a 10% rise in second-quarter profit, defying expectations for a drop, as strength at its global investment banking division offset a rise in expenses.
German tax investigators are searching offices at Deutsche Bank's headquarters in Frankfurt in connection with an investigation into so-called cum-cum transactions, Die Welt newspaper reported on Wednesday.
The European Commission is mulling a major deregulation push which could boost the fortunes of the region's banks. Brussels is keen to improve the competitiveness of European banks, which are lagging their U.S. counterparts.