(VOVworld) - Cambodian opposition leader Sam Rainsy is facing another defamation lawsuit brought by Parliament President Heng Samrin, according to a summon on Wednesday.

Cambodian opposition leader Sam Rainsy

The summon, issued by Vong Bunvisoth, deputy prosecutor of the Phnom Penh Municipal Court on Tuesday and publicized on Wednesday, invited Rainsy, president of the Cambodia National Rescue Party, to appear before court on Jan. 4, 2016. The summons said that Rainsy was sued by Heng Samrin who claims the opposition leader defamed him in a Facebook posting on Nov. 17. 

On November 20, the court summoned him to appear in court on Dec. 4, 2015 for an inquiry over his alleged involvement in "conspiring to falsify a public document, use the fake document and incite social chaos" in August.