JUDICIAL authorities said on Tuesday they had frozen accounts worth over 600 million euros belonging to late Nigerian dictator Sani Abacha in a move related to a Nigerian investigation into Abacha’s finances. Eight bank accounts holding shares worth 671 million euros at the Luxembourg subsidiary of a foreign bank had been frozen, Deputy Chief Prosecutor Georges Heisbourg said. Luxembourg authorities acted following a request by a Nigerian commission investigating alleged misappropriation of public funds by Abacha, whose sudden death in 1998 allowed the return of democracy to Africa’s most populous nation. The frozen accounts had been opened in the names of off-shore companies. The Luxembourg investigation showed that two of Abacha’s sons were the beneficiaries of the accounts, Heisbourg said. Any further investigation would be up to Nigerian authorities, he said.