An Indonesian court has sentenced an Islamic extremist to six years in jail for conspiring to attack the Myanmar embassy in Jakarta to avenge the killing of Rohingya Muslims.

The South Jakarta district court on Monday found Rokhadi, alias Shiro, guilty of "evil conspiracy" for plotting the bombing as well as owning explosives to be used to blow up the front of the embassy, Okto Rikardo, a prosecutor who attended the trial, told Agence France Presse on Tuesday.

Journalists in Myanmar staged a protest Tuesday to denounce new threats to press freedom and demand the release of a fellow reporter -- the first to be jailed since junta rule ended.

About 150 journalists and activists marched through Yangon chanting slogans including "No threat to press freedom" and waving placards which read: "Right to information is the life of democracy".

The United States sometimes uses the official name Myanmar instead of Burma as a "diplomatic courtesy" to the Asian country, the State Department said Monday, in a sign of rapprochement.

Military leaders changed the official name to "Myanmar" in 1989, saying that the old term "Burma" was a sorry legacy of British colonialism and implied that the ethnically torn land belonged only to the Burman majority.

An Indonesian court jailed an Islamic extremist for seven and a half years Monday over an "evil" plot to bomb the Myanmar embassy to avenge the killing of Rohingya Muslims.

Achmad Taufiq is one of several men to have gone on trial over the May plot, which came amid anger in Muslim-majority Indonesia at persecution of the stateless Rohingya in mainly Buddhist Myanmar.

Several thousand people joined a rally in Myanmar's main city on Sunday to call for the abolition of repressive laws and an end to politically related arrests.

The crowd gathered for about two hours near Yangon City Hall, chanting slogans such as "Give citizens full rights!" and "Freedom!"

Myanmar's leader on Thursday lent his support to reform of the country's junta-era constitution, indicating he would back changes to allow opposition leader Aung San Suu Kyi to become president.

Thein Sein, a former general who has won international praise for dramatic reforms since he became president in 2011, said lively debate about revising the charter showed increasing "political maturity.”

Myanmar on Tuesday announced there were "no more political prisoners" after issuing a sweeping amnesty order aimed at fulfilling a presidential pledge to free all dissidents by the end of the year.

The country has released scores of prisoners of conscience as part of dramatic reforms, implemented since the end of outright military rule in 2011, that have ended the former pariah's international isolation and seen most western sanctions disbanded.

Myanmar pro-democracy leader Aung San Suu Kyi's opposition party vowed Saturday to contest crucial elections in 2015 even if the constitution is not amended first to allow her to become president.

The military-drafted charter blocks anyone whose spouse or children are overseas citizens from leading the country -- a clause widely believed to be targeted at the Nobel laureate whose two sons are British.

At least three people died in an explosion in Myanmar's Shan state, police said Tuesday, in a part of the country where a tentative ceasefire exists between ethnic rebels and the army.

"Three people were killed and two others wounded in a blast this afternoon in Kong Long township in northern Shan state," police Colonel Min Aung at national police headquarters told AFP, without confirming that the explosion was caused by a bomb.

Three of the six countries not covered by the Chemical Weapons Convention are close to joining the agreement, the head of the world's chemical watchdog said Wednesday.

Speaking in Oslo the day after the Organization for the Prohibition of Chemical Weapons (OPCW) formally received the Nobel Peace Prize, director general Ahmet Uzumcu said Angola, Myanmar and South Sudan "are very close."