Kang Heang, who was long the governor of Kompong Speu province but who served as a CPP lawmaker since 2013, died of lung disease on Friday night.
CPP spokesman Sok Eysan said the lawmaker had long fought the illness.
“He was aged about 65 or 66 and his illness was a lung issue,” he said.
“He had not been regularly working, because he often had to go to the hospital because of his illness.”
Mr. Eysan added that Kang Heang would likely be replaced by the man after him on the CPP’s candidate list for the 2013 national election.
“I know unofficially that the Kompong Speu provincial council chief will replace him. His name is Sethya Vuth,” he said.
National Election Committee spokesman Hang Puthea said he had received notice from the CPP to replace Kang Heang.
CPP National Assembly spokesman Chheang Vun said he could not recall Kang Heang’s career achievements.
“I do politics, not monitor the work of National Assembly members,” he said.
“He had good relations with his province’s people and he joined us to adopt laws in the National Assembly.”