Prime Minister Junichiro Koizumi said Tuesday he is determined to privatize the nation's massive postal services despite strong opposition from the Liberal Democratic Party, which he heads.

Koizumi made the pledge at the party's annual convention at a Tokyo hotel, attended by the party's Diet members and delegates from its prefectural chapters.

Privatization of the postal services will be a major issue in the Diet session that convenes Friday. The government plans to submit related bills in March.