Party chief Do Muoi looks set to reign over a new, expanded Politburo featuring several rising young stars. Mr Muoi, President Le Duc Anh and Prime Minister Vo Van Kiet - all in their 70s - will remain in their present posts for continuity, at least in the short term, predict sources. The trio could be joined in the 19-strong Poliburo by at least eight new members. These should include southern party chief Truong Tan Sang and Interior Ministry official Nguyen Tan Dung. Both men are 47, making them among the youngest members in recent years. Mr Dung is tipped to assume the duties of outgoing Interior Minister Bui Thien Ngo. The ministry controls Vietnam's police, Customs and immigration forces as well as prisons. Mr Dung must satisfy increased demands for freedom after years of an isolated police state yet meet the party's desire for continued control and power. Mr Sang will face the task of maintaining investor confidence in the south, among the world's fastest growing regions, while beating back corruption. Three people expected to retain their places in the Politburo are National Assembly chairman Nong Duc Manh, Foreign Minister Nguyen Manh Cam and Lieutenant-General Le Kha Phieu. Mr Manh, known for his flexibility and willingness to compromise, is tipped to replace Mr Muoi after two years while General Phieu, the man considered his rival for the top job, is expected to graduate to the new internal elite to satisfy military desires for a greater share of power. The new Politburo must yet be ratified, but has already been drawn up in secret sessions this week involving the central committee. A top official denied yesterday there had been any power struggles. Hong Ha, chairman of the congress' preparation committee, said: 'There has been no crisis. 'The preparation of personnel follows a harmonious routine.' Mr Ha confirmed that the creation of a new internal elite within the politburo will see the abolition of a secretariat designed to link the central committee with the ruling body.