A male prosecutor in Tokyo had a relationship with a woman whom he had questioned in a political funds scandal involving the ruling Liberal Democratic Party, informed sources have said.

On Thursday, the Supreme Public Prosecutors Office released a statement saying that it is investigating the 48-year-old prosecutor and will examine the matter carefully and appropriately before taking strict measures.

According to the sources, the prosecutor led the investigation into the LDP funds scandal. He questioned a woman in her 30s as a suspect between 2023 and 2024. The two later began a relationship and once stayed together in a hotel room reserved for investigative purposes.

The prosecutor left the Tokyo District Public Prosecutors Office¡¯s special investigation squad last year and currently works at the Tokyo High Public Prosecutors Office.

At the Tokyo District Public Prosecutors Office, a different prosecutor has been sent to a criminal trial for allegedly using inappropriate interrogation methods in a fraud case.