HANOI, Dec 23 - Senior officials of Vietnam's ruling Communist Party concluded a two-day plenum in Hanoi on Tuesday, finalising decisions on candidates for the country's next top leadership, party chief To Lam said, but no names were released.

   Lam is viewed as the leading contender to keep the country's most powerful post, but in line with standard practices in the secretive country, announcements are expected only at the five-yearly party congress scheduled for January 19-25.