An independent panel investigating a data-falsification scandal at Japan's Mitsubishi Electric has found more cases. About 70 percent of the equipment maker's domestic production bases were involved in quality control fraud.

The panel of outside experts said in its latest report on Wednesday that it found 101 additional cases at 15 manufacturing facilities.

In most of the newly discovered cases, employees omitted some of the quality control tests requested by clients or falsified data.

One factory in Hyogo Prefecture, western Japan, did not conduct some of the vibration tests required for train cars for at least 50 years and submitted falsified data to clients.

At another factory in Aichi, central Japan, a voltage test was not conducted for elevator components exported to the United States before December 2018.

The panel says the employees engaged in the misconduct to meet delivery deadlines or cut costs.

Kimeda Hiroshi, Chair of Investigative Committee, said company executives bear heavy responsibility for failing to create a corporate culture that allows mid-level managers to enforce standards.

This is the third report by the panel. Two previous ones found 47 cases of data falsification at six factories.
The panel will continue its probe to establish the full scope of the scandal.