Senior officials from Japan, the United States, Canada and the 15-nation European Union will hold secret talks in Ottawa next month to coordinate policy toward a new round of global trade liberalization negotiations, government sources said Friday.

The sources said that topping the agenda at the quadrilateral talks, which will be held for two days from June 21, will be electronic commerce, services and investment.

Among the Japanese officials participating in the meeting will be Masakazu Toyoda, director general of the Ministry of International Trade and Industry's International Economic Affairs Department, the sources said.