After a brief respite on Wednesday, fighting has broken out anew in the Ukrainian city of Kiev on Thursday morning, killing at least 50 people after protesters opened up on government forces with molotov cocktails and bricks, capturing dozens of them, as government forces fired back with lethal force.

The truce declared by Ukraine’s president was very short-lived. Opposition leaders say that the truce was called to tamp down the fighting until more government forces could be moved into the area.

Over the last 24-hour period, security offices and munitions depots around the country have been raided and as many as 1,500 firearms and massive amounts of ammunition has been seized. Officials are concerned that those weapons will now be transported into Keiv and into the hands of the radicals among the protestors.

Ukrainian Interior Minister, Vitaly Zakharchenko has called on the protestors to hand over their weapons even as he announced that police have now been issued “combat” weapons for self defense.

As a result of the renewed fighting, the United States is urging the Ukrainian president to withdraw his forces from downtown Kiev. Jay Carney, the White House spokesman said in a statement, “We are outraged by images of Ukrainian security forces firing automatic weapons on their own people.” The White House also called for dialogue between the government and the protestors as they call for the protestors to “express themselves peacefully.” There has been no decision on the issue of sanctions however.

The 28-member European Union announced visa bans, asset freezes and restrictions on the export of anti-riot equipment on Thursday. The Union also suspended all arms sales to the Ukraine. Those restrictions will be drafted into law in the coming days. The vote on Thursday was unanimous. The Union also called on the Ukrainian government to form “a new inclusive government and the creation of the conditions for democratic elections.”

More than 100 people have been killed in the clashes this week and as many as 800 have been injured.