Prime Minister Hun Sen is expected to send an official letter today congratulating Thai Prime Minister Yingluck Shinawatra on her new post, following her endorsement by the country’s king, according to Minister of Information Khieu Kanharith.

Yingluck Shinawatra has been granted an audience with Thailand’s king at 5:30pm today at which she is expected to receive his endorsement to be the country’s next premier, the Bangkok Post reported yesterday.

The letter from Prime Minister Hun Sen congratulating her has already been drafted, Khieu Kanharith said after a briefing with about 40 reporters from Khmer-language newspapers on Saturday.

He also called on the reporters to refrain from insulting or attacking Thailand’s new premier, and urged the media and provincial authorities along the border to aspire to a spirit of cooperation with the new government in Thailand.

“Prime Minister Hun Sen suggested that we do not use the media to insult Yingluck as we had done with Abhisit, who was a thief,” Khieu Kanharith said, referring to allegations that the former Thai premier had attempted to encroach on Cambodian territory during the border conflict.

Koy Kuong, spokesman at the Ministry of Foreign Affairs, could not be reached for comment on Sunday.

Yingluck was elected Thailand’s first female prime minister by the lower house on Friday, following the Pheu Thai Party’s victory in the country’s national election on July 3.

The Cambodian government has appeared to warm to the new administration, bolstering hopes a resolution an the ongoing border conflict with Thailand over the Preah Vihear temple area can be negotiated.