(CNN)Bloodshed continues in Myanmar after another violent day Thursday saw at least 12 people killed by the ruling junta, according to a watchdog group, prompting a top UN official to say the crackdown on peaceful protests is “likely meeting the legal threshold for crimes against humanity.”

In the small, central town of Myaing, police shot into a crowd of unarmed people, killing at least eight, according to advocacy group Assistance Association for Political Prisoners (AAPP). Images posted on social media showed the town’s roads streaked with blood and bodies laying crumpled and lifeless in the street.

In one unverified graphic image, a body can be seen with the head blown apart and brain remnants spilled onto the road.

The shootings in tiny Myaing are further evidence the military junta, which seized power in a coup on February 1, is attempting to crush peaceful opposition to its enforced rule in every corner of Myanmar, not just the big towns and cities.

In the biggest city, Yangon, Thursday, protester Chit Min Thu was killed in North Dagon area, according to Reuters. His wife, Aye Myat Thu, told the news agency he had insisted on joining the protests despite her appeals for him to stay home for the sake of their son.

“He said it’s worth dying for,” she said. “He is worried about people not joining the protest. If so, democracy will not return to the country.”

CNN has not been able to independently verify Thursday’s deaths.

At least 80 people have been killed since the military invalidated the results of the country’s democratic election, the United Nations human rights office said, and hundreds more injured. At least four of the deaths in recent days were individuals arrested and detained by the junta, including two officials with the ousted National League for Democracy (NLD) party. All four died in custody, according to the Office of the UN High Commissioner for Human Rights.

More than 2,000 people have been arbitrarily detained since the coup, according to AAPP, many of them kept out of contact from family and friends, their condition or whereabouts unknown.

On Thursday, the UN special rapporteur for human rights in Myanmar, Tom Andrews, said in a statement to the UN Human Rights Council in Geneva that a “growing body of reporting” indicates the junta’s security forces are committing “acts of murder, imprisonment, persecution and other crimes as part of a coordinated campaign, directed against a civilian population, in a widespread and systematic manner, with the knowledge of the junta’s leadership.”

The “brutal response,” he said, is “thereby likely meeting the legal threshold for crimes against humanity.”

He called on UN member states to stop the flow of revenue and weapons to the junta, saying multilateral sanctions “should be imposed” on senior leaders, military-owned and controlled enterprises and the state energy firm, Myanmar Oil and Gas Enterprise.

His statement came after rights group Amnesty International released a report saying the military were embarking on a “killing spree” in Myanmar, using increasingly lethal tactics and weapons normally seen on the battlefield against peaceful protesters and bystanders.

By verifying more than 50 videos from the ongoing crackdown, Amnesty’s Crisis Evidence Lab confirmed security forces appear to be implementing planned, systematic strategies, including the ramped-up use of lethal force, indiscriminate spraying of live ammunition in urban areas, and that many of the killings documented amount to extrajudicial executions.

“These Myanmar military tactics are far from new, but their killing sprees have never before been livestreamed for the world to see,” said Joanne Mariner, director of crisis response at Amnesty International. “These are not the actions of overwhelmed, individual officers making poor decisions. These are unrepentant commanders already implicated in crimes against humanity, deploying their troops and murderous methods in the open.

Suu Kyi accused of bribery

Ousted civilian leader Aung San Suu Kyi was accused of bribery and corruption by the military Thursday, adding to four charges already against her that could result in a years-long prison sentence.

Military spokesperson Brig. Gen. Zaw Min Tun said in a news conference that Suu Kyi accepted illegal payments worth $600,000, as well as gold, while in government, according to Reuters.

The spokesperson added that the information had been verified following a complaint from a former Yangon regional minister, and an anti-corruption committee was investigating.

Suu Kyi’s lawyer, Khin Maung Zaw told CNN “the allegations are a complete fabrication.”

“I have been in politics in Myanmar for nearly 40 years, and in all these years I have not witnessed such shameless allegations” he said. “We are in a country where the people have seen lots of corruption in the past and many misbehaviors, but Aung San Suu Kyi is not in that sphere of corruption.”

He added that while he has had “many disagreements” with Suu Kyi, “when it comes corruption, bribery, greed — this is not her, she is not that kind of woman.”

Along with Suu Kyi, ousted President Win Myint, his wife, and several cabinet ministers were being investigated for allegedly asking for and accepting “money from some entrepreneurs,” the spokesperson said, without clarifying, according to Reuters.

Suu Kyi and Win Myint remain under house arrest.

The military, headed by coup-leader Gen. Min Aung Hlaing, took full control of the country last month, ousting Suu Kyi’s democratically elected government, which had won a landslide in November 2020 elections.

The army justified its action by alleging widespread voter fraud in that poll — only the second democratic vote since the previous military junta began a series of reforms in 2011.

In a video statement played to the UN Human Rights Council, Myanmar’s permanent secretary of the Ministry of Foreign Affairs Chan Aye said: “In recent days, authorities concerned have been paying attention to maintaining law and order in the country,” and “authorities have been exercising utmost restraint to deal with the violent protests.”

Chan Aye also said the military leadership remains committed to “free and fair multiparty democratic elections.”

But speaking to CNN’s Christiane Amanpour, Kyaw Moe Tun, Myanmar’s ambassador to the UN, said the country doesn’t need fresh elections as the last poll was free and fair.

His comments came after the 15 countries of the UN Security Council unanimously backed the strongest statement since the coup, saying it “strongly condemns the violence against peaceful protestors” and called on the military to “exercise utmost restraint.”

UN diplomats told CNN that China, Russia, and Vietnam objected to tougher language calling events “a coup” and in one draft forced the removal of language that would have threatened further action, potentially sanctions.

In a statement, China’s ambassador to the UN, Zhang Jun, said “it is important the Council members speak in one voice. We hope the message of the Council would be conducive to easing the situation in Myanmar.”

Kyaw Moe Tun said the message “does not meet the peoples’ expectation,” saying up against the brutality of the military “we all feel helpless” and called on the international community for protection.

CNN’s Sarita Harilela, Richard Roth and Radina Gigova contributed reporting.