Cambodian Prime Minister Hun Sen has urged civil servants to meet an upcoming deadline for making a mandatory declaration of their assets, as he took his turn.

Hun Sen said he was pleased that more than 10,000 officials have already made their confidential declarations to Cambodia's anti-corruption agency. About 25,000 are required to do so by April 7, or face up to a year in jail and a fine of up to 2 million riels ($500).

The requirement is part of an anti-corruption law first proposed 15 years ago but adopted only last year. Cambodia is routinely listed by independent groups such as Transparency International as one of the most corrupt countries in Asia.

Hun Sen told reporters his monthly salary is 4.6 million riels ($1,150).