The Cambodian Youth Party has officially filed a complaint requesting the dissolution of the opposition CNRP.
CYP president Pich Sros submitted the request to the Interior Ministry, claiming the party conspired with its leader and the US to topple the government.
Mr Sros said the arrest of CNRP president Kem Sokha last month on treason charges proved the party had been working with the US government to push for regime change in Cambodia since 1993.
“I am politician of the next generation and I don’t want to see the country fall into war,” Mr Sros said.
But Sam Kuntheamy, executive director of election watchdog NICFEC, said the CYP had no right to dissolve other political parties.
“All political parties come under the jurisdiction of the Interior Minister,” he said. “It is up to the ministry to dissolve any party that has violated the law.”
“I think CYP is just trying to make political gains because they will attract more support without the opposition party as competition,” he added.
Mr Kuntheamy said that the ruling CPP and opposition CNRP have almost equal support, which provides a proper choice for the electorate.
“We want to see political rivals that can command support from the people in order to have free and fair elections,” he said.
CNRP vice-president Mu Sochua, who is currently in exile, agreed that only the Interior Ministry has a mandate to dissolve parties.
Ms Sochua also questioned what would happen in practice if the opposition were disbanded.
“How would the CPP divide out CNRP seats? And how could the National Assembly be considered representatives of people who voted for the CNRP?” she said.
However, that the opposition parliamentarians have frequently boycotted the parliament sessions and as such, were not serving their electorate was not explained.
Prime Minister Hun Sen recently threatened to dissolve the CNRP if it was found the party had conspired to treason.
Funcipec also said it would file a complaint asking for the dissolution of the CNRP after Prince Norodom Ranarridh returns from a trip overseas.
Interior Ministry administration chief Men Bunrith confirmed receipt of the complaint.