調しらべ

According to the police investigation, there is a high probability that the perpetrator fled the scene.

Upon being questioned by authorities, the suspect denied any involvement in the incident.

As the investigation into the situation progressed, it became clear that the scale of the fraud was larger than expected.

As a result of a detailed investigation, it became clear that the product defect originated in the manufacturing process.

Through an investigation by an administrative agency, the flow of illegal funds was traced.