Wai Yan Aung of Bassein Government Technical College, a leader of the Irrawaddy protest against the National Education Law, was jailed under Article 18.
It is believed the three Chinese men were stopped and searched by Burmese soldiers, who suspected they may be spies after viewing pictures on their phones.
Dozens of students who oppose the National Education Bill have begun two marches to Rangoon, one from Mandalay and the other from Tavoy.
The Rangoon University Teachers’ Association (RUTA) has announced its support for students protesting the National Education Bill.
Some 500 students from across Burma began an emergency meeting in Rangoon on Wednesday to oppose the National Education Bill.
Education in Burma’s is ranked amongst the worst in the world.