Protesters are dispersed as riot police fire tear gas during a demonstration in Yangon, Myanmar, Monday. Myanmar security forces continued to clamp down on anti-coup protesters, firing tear gas to break up a crowd of around 1,000 people who were demonstrating in the capital, Naypyitaw. The protesters deployed fire extinguishers to create a smoke screen as they fled from authorities. (AP photo)

YANGON, Myanmar (AP) — Demonstrators in Myanmar’s biggest city came out Monday night for their first mass protests in defiance of an 8 p.m. curfew, seeking to show support for an estimated 200 students trapped by security forces in a small area of one neighborhood.

The students and other civilians earlier took part in one of the many daily protests across the country against the military’s seizure of power last month that ousted the elected government of Aung San Suu Kyi.

The military government also placed a major curb on media coverage of the crisis. It announced that the licenses of five local media outlets — Mizzima, DVB, Khit Thit Media, Myanmar Now and 7Day News — have been canceled.

“These media companies are no longer allowed to broadcast or write or give information by using any kind of media platform or using any media technology,” it said on state broadcaster MRTV.

All five had been offering extensive coverage of the protests, often with livestreaming video online. The offices of Myanmar Now were raided by the authorities Monday before the measure was announced.

DVB said it was not surprised by the cancellation and would continue broadcasting on satellite TV and online.

“We worry for the safety of our reporters and our staff, but in the current uprising, the whole country has become the citizens’ journalists and there is no way for military authorities to shut the information flow,” Executive Director Aye Chan Naing told The Associated Press.

The government has detained dozens of journalists since the coup, including a Myanmar Now reporter and Thein Zaw of AP, both of whom have been charged under a public order law that carried a penalty of up to three years in prison.

The night’s street protests began after police cordoned off part of Yangon’s Sanchaung neighborhood and were believed to be conducting door-to-door searches for those who fled attacks by security forces to seek shelter in the homes of sympathetic strangers.

News of their plight spread quickly on social media, and people poured into the streets in neighborhoods all over the city to show solidarity and in hopes of drawing some of the pressure off the hunted protesters. On some streets, they constructed makeshift barricades with whatever was at hand.

In the Insein district, they spread across road junctions, singing songs, chanting pro-democracy slogans and banging objects together.

The diplomatic missions of the United States, Britain, Canada and the European Union all issued statements urging the security forces to allow the trapped people to return safely to their homes. Although all have been sharply critical of the Feb. 1 coup and police violence, it is unusual for such diplomatic statements to be issued in connection with a specific, ongoing incident.

“There is heightened tension caused by security forces surrounding Kyun Taw Road in Sanchaung Township, Yangon. We call on those security forces to withdraw and allow people to go home safely,” said the U.S. Embassy’s statement.

Reports on social media citing witnesses said as many as 50 people were arrested overnight in Sanchaung and other parts of the city, but many of those who had been hiding were able to leave safely at dawn Tuesday, a few hours after police abandoned their search.

On Monday night, security forces chased crowds, harassed residents watching from windows, and fired stun grenades. They also were some reports of injuries from rubber bullets.