The politician, who was accompanied by his lawyer, did not comment to reporters on the reasons for his visit.
The Special Investigation Service (STT) is investigating suspicions that Raimondas Kurlianskis, vice-president of MG Baltic, one of Lithuania’s biggest business groups, gave a bribe of €106,000 to the politician.
Kurlianskis has been arrested and Masiulis has a status of special witness in the investigation.
Masiulis last Friday asked the Central Electoral Commission to terminate his MP mandate, saying that he will not hide behind his parliamentary immunity. He vowed to cooperate with law-enforcement bodies and prove that he is not guilty.
Prosecutors said last Friday they had discovered a large sum of cash at Masiulis’ home.