Prime Minister Mahathir Mohamad announced his resignation on Monday, according to reports, paving the way for a possible formation of a new government.
Mahathir's decision follows a weekend of political wrangling, after it was reported that the his party was planning to form a new government that would exclude his anointed successor, Anwar Ibrahim.
The tussle between old rivals Mahathir, 94, and Anwar, 72, is the latest chapter in the long-running political saga between two of the country's most prominent political figures.