Junta officials have threatened to dissolve the National League for Democracy for alleged involvement in election fraud and any conviction for Suu Kyi could see her barred from politics.
The U.N. envoy also cited reports of unconfirmed deaths, injuries, and damage to houses and civilian property in the town of Mindat in western Chin state, where the junta declared martial law.
He said the military's purpose is to establish a federal state based on multi-party democracy. He said the shift can take place within 12 or 18 months if circumstances allow.
Citing a leaked document, Kyodo said some 100 Myanmar diplomats around the world have been dismissed after opposing the coup.
The United Nations Refugee Agency said that in Myanmar, as of last week, approximately 60,700 women, children, and men have been internally displaced.
The announcement on Myanmar's army-run Myawaddy TV said Yuki Kitazumi had been arrested on April 18 for "inciting" the country's anti-military civil disobedience movement and riots.
Security forces in Myanmar have killed at least 739 people since a February 1 military coup ousted civilian leader Aung San Suu Kyi, as per reports.
Coup leader Min Aung Hlaing will travel to Indonesia for the summit, in his first overseas trip since the putsch, Nikkei Asia reported.
Security forces reportedly broke up a march at dawn in Mandalay that included Buddhist monks.
A prison official told AFP on condition of anonymity that jails across the country will start freeing more than 23,000 people on Saturday.
Opponents of the coup have been seeking an alliance with ethnic minority groups as a way of strengthening their resistance.
“We learnt from reliable sources that the three journalists from Mizzima news organisation fled Myanmar and were holed up somewhere in Moreh in Manipur,” AMWJU president, Bijoy Kakchingtabam said.
As Burma burns, refugees who include policemen and soldiers who refused to shoot their own people are fleeing to India.
This year in the wake of February's military coup, with the rains not far off, the farmers rarely step out of their makeshift homes and don't dare leave their camp.
Many of the eggs also bore a drawing of the three-fingered salute, a symbol of resistance to the February 1 coup.