An American journalist was detained by Myanmar’s military junta on Monday as he attempted to leave the country. The journalist, Danny Fenster, is the fourth foreign media worker held by the government since the military seized power in a coup in February.

Fenster is the managing editor of the news organization Frontier Myanmar, which is said to be “one of the country’s top independent news sites.” According to the company, Fenster was seized at Yangon International Airport as he was preparing to fly to Malaysia. Fenster is said to have been taken to Insein Prison in Yangon after his detainment. The jail has housed thousands of political prisoners and is infamous for poor conditions, including low-quality food and living conditions.

Frontier Myanmar released a statement expressing concern for Fenster’s well-being, adding, “[w]e do not know why Danny was detained and [we] have not been able to contact him.” The news organization called for the journalist’s immediate release from the prison. A spokeswoman for the US Embassy in Myanmar stated it was not able to provide information regarding the incident “due to privacy considerations.”

Myanmar’s military took control of the country in February alleging widespread fraud in the general election that occurred three months earlier. Notably, the election commission has stated that there is no evidence to support the armed forces’ claim. Since the coup, the military government has accused more than seventy journalists of affecting “state stability,” and regularly publishes the names of “wanted” journalists. According to human rights advocates, around 4,000 other people have been detained by the junta for resisting the coup.

Press watchdogs including the Foreign Correspondents’ Club of Thailand (“FCCT”) have condemned Fenster’s detention. The FCCT stated, “[t]he arrests of journalists, and the violence used by security forces on anyone caught trying to report or record their actions, constitute an extraordinary attack on freedom of expression in Myanmar.”