YANGON, Dec 2 - More than 100 customs officials have been ordered arrested in Myanmar in the latest crackdown on corruption in the army-ruled country, officials said on Saturday.

The arrest order for 113 Customs Department staff was issued on Monday after a probe by the Bureau of Special Investigation which questioned more than 500 customs officials.

"At the interrogation we were asked how much in bribes we had taken since we joined the department and what we bought with the ill-gotten money," said one customs official who declined to be named.

Authorities were expected to arrest another 100 customs staff later this month, another official said.

Since the junta launched an anti-corruption drive in May, more than three dozen customs officials have been sentenced to jail terms ranging from 14 to 66 years after closed trials.

Corruption is endemic in the former Burma, ruled by the military since 1962. Low-ranking officials often complain about low pay or being forced into corrupt activities by their superiors.

"Fighting bribery and corruption is essential, but there should not be any discrimination and it should start at the top, not the bottom," said political analyst U Win Naing.