Adam Castillo, a security consultant and former president of the American Chamber of Commerce in Myanmar, was detained upon returning to the country on Thursday, the police source said.

He is being held in connection with a lawsuit filed by the current director of a business organization he previously headed, the source said, adding that he faces allegations of breach of trust related to property matters, which carry a potential prison sentence of up to 10 years under Myanmar law.

A court on Friday ordered Castillo remanded in custody for two weeks while investigations continue, the source said.

A second source confirmed the detention but provided no additional details.

The US State Department said it was aware of reports regarding the detention of a US citizen in Myanmar but declined to comment further, citing privacy considerations.

Castillo recently published a memoir documenting his experience working in Myanmar during and after the 2021 military coup, which toppled the elected government of Aung San Suu Kyi and triggered widespread unrest and civil conflict.

Myanmar has remained under military-dominated rule since the coup, despite a political transition process that international observers have described as tightly controlled and largely excluding opposition groups.

The case comes amid ongoing tensions between Myanmar’s military authorities and parts of the international business and diplomatic community that scaled back operations following the coup.