A spokeswoman for Richardson said the Myanmar government's remarks were "not true" and referred requests for comment to the diplomat's original statement, in which he said he could not in "good conscience" sit on a panel he feared would only "whitewash" the causes of the Rohingya crisis.
Myanmar analyst U Khin Zaw Win said Richardson's words could deliver a "much-needed jolt for Aung San Suu Kyi and for the people around her who are not reporting the truth to her".
They are President Joko Widodo of Indonesia, Philippines President Rodrigo Duterte, Prime Minister Lee Hsien Loong of Singapore, Prime Minister Thongloun Sisoulith of Laos, Prime Minister Nguyen Xuan Phuc of Vietnam, Prime Minister Najib Razak of Malaysia, Prime Minister Hun Sen of Cambodia, General Prayuth Chan-o-cha of Thailand, Aung San Suu Kyi of Myanmar and Sultan of Brunei Haji Hassanal Bolkiah.
Reuters reporters Wa Lone and Kyaw Soe, who both covered the Rohingya crisis extensively from within the country, were taken into custody in December for allegedly intending "to send important security documents regarding security forces in Rakhine State to foreign agencies overseas", according to Myanmar's information ministry.
Two years ago, Myanmar celebrated a moment many thought would never come as democracy icon Aung San Suu Kyi took her seat at the head of the.
Bill Richardson resigned from an advisory panel trying to tackle the Rohingya crisis.
Aung San Suu Kyi is drawing heavy global criticism for her poor handling of tge Rohingya crisis in Myanmar.
Suu Kyi's government said on Friday it did not want discuss the details of the exchange between Suu Kyi and Richardson any further.
A State Department spokesman said he could not immediately confirm details of Richardson's s.
The statement said that during the initial two-day meeting of the 10-member body that started on Monday, "it became evident that the intent of Governor Bill Richardson...was not to provide advice based on the recommendations of the Advisory Commission on Rakhine State chaired by Dr Kofi Annan but to pursue his own agenda". It is Contempt of Court.
The Myanmar government has pledged to rebuild Rohingya villages, and is urging them to return.
Zaw Htay said the issue of the arrests was not in Richardson's mandate and he should not have brought it up at his meeting with Suu Kyi.
The Advisory Board's statement urged the government to allow United Nations humanitarian work in conflict zones and access to media as soon as possible.
Days after Bangladesh made a decision to postpone the repatriation of Rohingyas to Myanmar, a senior official of the United Nations (UN) stated that it is still not safe for the refugees to go back to their homeland. The remaining members of the advisory board on Wednesday toured temporary camps the government has set up for returnees.
"I believe that the Myanmar government has emphasised speed instead of systems", he said.