"When we receive such a request, we review it to determine if it puts us on notice of unlawful content", Facebook told AFP. The company's ties with local authorities took a turn for the worse when videos of the new Thai king Maha Vajiralongkorn wearing a crop top went viral on the platform.
Thailand is the most active country on Facebook in Asia.
After Facebook had taken down over 170 pages, Thai authorities last week gave the social media giant until 10 a.m. Tuesday (Monday 7 p.m. PT) to remove 131 remaining pages deemed illegal in the country, failing which legal action would be taken.
However, there would be no immediate measures to block Facebook, Takorn Tantasith, secretary-general of Thailand's telecoms commission, told reporters, adding that bureaucracy had held up the process of removing the 131 impugned content items.
"Should Facebook comply with the requests with the Thai Government, Facebook will face a serious effect, this will go against the main principle in the first days when they talk about the free flow of information", he said. "Over recent years, we've simplified our policies further to help people understand how we use information to make Facebook better", it said.
No items were restricted in 2015 and 35 items were removed in 2014, the year of the coup.
Thailand officially entered its one-year period of mourning in October following the death of beloved King Bhumibol after he reigned for more than seven decades, one of the longest reigning monarchs in history.
Vajiralongkorn does not enjoy his father's level of popularity and has spent much of his life overseas, particularly in Germany.
At least seven people are known to have been charged with lese majeste since he took the throne.
Somsak Jeamteerasakul, an exiled Thai academic and monarchy critic, posted a letter from Facebook on his own account informing him that some of his posts were among those censored.
The footage was purportedly filmed in Munich, Germany, in July past year. The world's largest social network complies with local regulations in the countries in which it operates, though it's clashed with officials and regulators over data requirements and content curbs.
Early Tuesday morning, The Bangkok Post quoted Thai Internet Service Provider (Tispa) as saying it was under vast government pressure to shut down all access to Facebook as it still refused to take down every post identified as sensitive.