Myanmar’s crisis took a dramatic turn Friday on the international stage when the country’s ambassador to the United Nations at a special session of the General Assembly declared his loyalty to the ousted civilian government of Aung San Suu Kyi and called on the world to pressure the military to cede power.

There were arrests in Yangon and Mandalay, the two biggest cities where demonstrators have been hitting the streets daily to peacefully demand the restoration of the government of Suu Kyi, whose National League for Democracy party won a landslide election victory in November. Police have increasingly been enforcing an order by the junta banning gatherings of five or more people.

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Many other cities and towns have also hosted large protests against the Feb. 1 coup.

The takeover has reversed years of slow progress toward democracy after five decades of military rule. Suu Kyi’s party would have been installed for a second five-year term in office, but the army blocked Parliament from convening and detained her and President Win Myint and other top members of her government.

At the General Assembly in New York, Myanmar’s Ambassador Kyaw Moe Tun declared in an emotional speech to fellow delegates that he represented Suu Kyi’s “civilian government elected by the people” and supported the fight against military rule.

He urged all countries to issue public statements strongly condemning the coup, and to refuse to recognize the military regime. He also called for stronger international measures to stop violence by security forces against peaceful demonstrators.

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He drew loud applause from many diplomats in the 193-nation global body, as well as effusive praise from other Burmese on social media, who described him as a hero. The ambassador flashed a three-finger salute that has been adopted by the civil disobedience movement at the end of his speech in which he addressed people back home in Burmese.

In Yangon on Saturday morning, police began arrests early at the Hledan Center intersection, which has become the gathering point for protesters who then fan out to other parts of the city. Police took similar action in residential neighborhoods.

Security forces also tried to thwart protests in Mandalay, where roadblocks were set up at several key intersections and the regular venues for rallies were flooded with police.

Mandalay has been the scene of several violent confrontations, and at least four of eight confirmed deaths linked to the protests, according to the independent Assistance Association of Political Prisoners.

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On Friday, at least three people there were injured, two of whom were shot in the chest by rubber bullets and another who suffered what appeared to be a bullet wound on his leg.

According to the association, 771 people have been arrested, charged or sentenced at one point in relation to the coup, and 689 are being detained or sought for arrest.

The junta said it took power because last year’s polls were marred by massive irregularities. The election commission before the military seized power coup had refuted the allegation of widespread fraud. The junta dismissed the old commission’s members and appointed new ones, who on Friday annulled the election results.