The Japanese government is to set up a third-party panel to raise transparency about the money being spent on the 2025 World Expo in Osaka.

The cost of building the venue is expected to reach up to 235 billion yen, or about 1.65 billion dollars, which is 80 percent higher than the initial budget.

It was found later that there are also additional expenses for building pavilions and hiring security guards that the government needs to bear.

The opposition parties say the cost of the Expo keeps ballooning and there is no transparency.

The government is planning to set up the panel under Economy, Trade and Industry Minister Saito Ken.

The panel's experts will include construction and management consultants as well as accountants.

They will monitor the progress of the project and examine the appropriateness of the expenses.

The government plans to consider taking measures as needed based on the panel's findings.