This post is being updated as the day continues.
Just hours after a truce was declared, deadly clashes between anti-government protesters and security forces broke out again in Ukraine's capital.
By late afternoon Thursday in Kiev, at least 21 civilians had been killed, Reuters reported. Those deaths followed the 25 or so fatalities earlier in the week.
But the day's toll may have been even higher: CNN reported being told by "the head of the protesters' medical service" that 100 people had died Thursday and another 500 were injured.
Meanwhile, there was word as evening approached that the country's Interior ministry said 67 police officers had been "captured" by protesters. The BBC's Gabriel Gatehouse, though, said protesters had told him "they took 30 police captive this morning. Others said to have surrendered. Not clear where they are now."
The White House blamed President Viktor Yanukovych's government for the latest carnage. "We are outraged by the images of Ukrainian security forces firing automatic weapons on their own people," press secretary Jay Carney said in a statement released to reporters. "We urge President Yanukovych to immediately withdraw his security forces ... and to respect the right of peaceful protest, and we urge protesters to express themselves peacefully. We urge the Ukrainian military not to get involved in a conflict that can and should be resolved by political means. ... The United States will work with our European allies to hold those responsible for violence accountable."
From the city's Independence Square, NPR's Soraya Sarhaddi Nelson reported on Morning Edition that it's "absolute chaos" in the area. She's seen numerous people carried away on stretchers one person completely covered by a sheet. Small explosions can be heard. Protest leaders are warning there are snipers on rooftops. The opposition appears to have retaken control of the October Palace, a historic building that's now a cultural center. Smoke is rising over the city.
The protesters, Soraya said, say police forces and "thugs" who support Yanukovych never observed the truce that was announced last night.
Yanukovych's office, though, released a statement blaming the opposition for Thursday's deadly violence. It reads, in part:
"Radical protesters ... launched an offensive on the law enforcement officials using firearms despite the declared truce. Assurances of opposition leaders regarding the necessity of truce and restoration of dialogue turned out only a maneuver to play for time and mobilize arming of rebels. ...
"All attempts of the government to establish dialogue and resolve the conflict peacefully were ignored by rebels. They launched an offensive. They act in organized armed groups, use firearms, including sniper rifles, they shoot to kill. ..."
Meanwhile, diplomatic efforts to end the crisis continue. So do discussions by leaders from other European nations about possible sanctions on the Yanukovych government. Already, the U.S. has said it will not issue travel visas to 20 senior Ukrainian officials.
Late Thursday in Kiev, Reuters reported that "foreign ministers from France, Germany and Poland will continue talks with Ukrainian officials and opposition leaders through the night, a Polish foreign ministry spokesman said."
President Obama, as The Guardian reports, has had critical words about Russian President Vladimir Putin's role in the crisis. Russia, Obama said Wednesday, still views the world through a "Cold War chessboard" and needs to support the people of Ukraine in their effort to secure basic freedoms.
Russia opposes sanctions against the Yanukovych government.
Britain's foreign ministry said it has summoned Ukraine's ambassador to the U.K. to a meeting.
As we've reported before, the anti-Yanukovych protests that have been raging for weeks were sparked in part by the president's rejection of a pending trade treaty with the European Union and his embrace of more aid from Russia. Protesters have also been drawn into the streets to demonstrate against government corruption.
We'll be updating on the news from Kiev.
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