The parliamentary seats were left by those who became government leaders or officials in the 2015 general election, U Aung Myint told the press after a meeting of the House of Nationalities (Upper House) in Nay Pyi Taw on August 22.
The number of vacant seats will be confirmed when time approaches, he said, without giving a specific date.
Myanmar held a general election to elect parliament representatives in November 2015, in which the National League for Democracy (NLD) won the absolute majority of seats in the two houses.
Myanmar to hold by-election in early 2017
Myanmar will hold a by-election early next year to fill the vacant seats in the parliament, U Aung Myint, member of the Election Commission, has said.
VNA