The Thai military government lunched a probe against Thaksin on Tuesday for insulting the monarchy after his recent interview in Seoul in which he claimed that Thai privy counsellors, advisers to the monarch of Thailand, stood behind the 2014 military coup.
Under Thailand’s defamation law, anyone convicted of insulting the king, queen, heir or regent faces up to 15 years in prison on each count.
The order from national police chief Pol. Gen. Somyot Pumpunmuang, circulated to all units on Friday, directed officers to monitor supporters of the former prime minister and strengthen security measures in the country amid fears of civil disobedience or armed violence, according to Bangkok Post.
The critics of the former prime minster say her policies were strongly influenced by her older brother, Thaksin, who was ousted in a military coup in 2006 and fled the country shortly before a court sentenced him to two years in jail for corruption in 2008.
Former Prime Minister Yingluck Shinawatra assumed office in 2011 following the election, becoming Thailand's first female prime minister.
Following the May 22, 2014 military coup in Thailand Gen. Prayuth Chan-ocha, the current prime minister, introduced martial law in the country. In the days that followed the coup, military authorities announced they were targeting national reconciliation and new elections.