The Papua New Guinea opposition MP, Nixon Mangape, said he was offered a $US1.5 million (5 million Kina) bribe to join the Government prior to July's vote of no confidence in the Prime Minister, Peter O'Neill.
Mr O'Neill won the parliamentary ballot, 85 votes to 21.
PNG Today reports that Mr Mangape, the MP for Laigap-Porgera, said he was offered the bribe during lobbying leading up to the vote.
He said he refused the bribe as he was mandated by the people of his electorate to address their issues and not his own.
Mr Mangape said the MPs who supported the Prime Minster in the no confidence vote are selfish, and he said the MPs who voted against Mr O'Neill did so to break the PNG people from the bondage of corruption.