The main lawyer for Aung San Suu Kyi, who is being tried on multiple criminal charges, said late Thursday he has been issued a gag order barring him from talking about her cases, AP reported.

Lawyer Khin Maung Zaw wrote on his Facebook page that the action against him was taken under Section 144 of the Code of Criminal Procedure, a broadly worded statute from British colonial times intended to deal with emergency situations that threaten public safety.

Kyi Win, another lawyer on Suu Kyi’s legal team, told The Associated Press that the township office in the capital Naypyitaw, where Suu Kyi is being tried, summoned Khin Maung Zaw to have him sign an undertaking not to reveal information to the media.