Myanmar's ousted leader, Aung San Suu Kyi, will remain in custody a further two days, her lawyer has told media, as protesters began gathering again to demand her release and an end to military rule.
It was believed she would be released on Monday but her lawyer says she will remain in detention until Wednesday.
Security forces in Myanmar deployed armoured vehicles in major cities two weeks after the military overthrew Suu Kyi's government and detained her on charges of illegally importing six walkie-talkie radios.
Her detention was due to expire on Monday but her lawyer, Khin Maung Zaw, told media a judge at a court in the capital, Naypyitaw, had said she was remanded until February 17.
"Whether it is fair or not, you can decide yourself," Khin Maung Zaw said.
The February 1 coup and the arrest of Suu Kyi and others have sparked the biggest protests in Myanmar in more than a decade.
Hundreds of thousands have taken to the streets across the country for 10 days to denounce the coup, which derailed the Southeast Asian country's tentative transition to democracy, and to call for Suu Kyi's release.
Violence has been limited but on Sunday police opened fire to disperse protesters at a power plant in northern Myanmar although it was unclear if they were using rubber bullets or live rounds and there was no word on casualties.
As well as the demonstrations around the country, the military is facing a strike by government workers, part of a civil disobedience movement that is crippling many functions of government.
More than a dozen police trucks with four water cannon vehicles were deployed on Monday near the Sule Pagoda in central Yangon, which has been one of the main demonstration sites in the commercial capital, as groups of protesters began gathering peacefully outside the central bank and the Chinese embassy.
An armoured vehicle and about six trucks carrying soldiers were parked nearby, a witness said.
Domestic media showed protesters gathering in the capital, Naypyitaw, many carrying pictures of Suu Kyi with the message: "we want our leader".
Suu Kyi, 75, won the Nobel Peace Prize in 1991 for campaigning for democracy and spent nearly 15 years under house arrest.
The army has been carrying out nightly arrests and on Saturday gave itself sweeping powers to detain people and search private property. On Sunday, it published penal code amendments aimed at stifling dissent.
Western embassies - from the European Union, Britain, Canada and 11 other nations - issued a statement late on Sunday calling on security forces to "refrain from violence against demonstrators and civilians, who are protesting the overthrow of their legitimate government".
The amendments to the penal code set out a 20-year prison term for inciting hatred of the government or military or hindering the security forces engaged in preserving state stability.
Hindering the security forces carrying out their duties is punishable by seven years in prison while spreading fear, fake news or agitating against government employees gets three years.
At least 400 people have been detained since the coup, the monitoring group Assistance Association for Political Prisoners said.
Suu Kyi's party won the election on November 8 but the military said the vote was marred by fraud and used that complaint to justify their coup. The electoral commission dismissed accusations of fraud.