At least nine people were killed Tuesday in clashes between police and protestors in Ukraine, making it the most violent day since the protests began in November. 

The protestors were killed as security forces clashed with demonstrators and stormed their encampment at Independence Square in Kiev, according to the Los Angeles Times. Fiery explosions illuminated the tents after protestors ignored a warning from police to clear the scene. 

Security forces stormed the demonstrators with water cannons and stun grenades after giving them a 15-minute warning to exit the premises. Nevertheless, thousands of protestors involved in the demonstrations against President Viktor Yanukovich stayed in the square. 

Leaders from the demonstration told journalists in Kiev that they requested negotiations with the government to stop the violence, and the government agreed to meet with them on Wednesday. Yet, the police set fire to the protestors' tents and barricades during the night on Tuesday.

Anti-government protestors have stormed the capital since late November, when President Yanukovich unilaterally reneged on an agreement between Ukraine and the European Union in order to keep economic ties with Russia. 

The square was stormed by police around 8 p.m. on Tuesday night, and opposition leaders reported three deaths before the square was besieged by police. An Interior Ministry report issued on Tuesday said two policeman were also killed in the clashes, as well as a political official and six protestors. 

Oleksandr Bryginets, the opposition lawmaker, said three more protestors later died as a result of the attack, although that was not confirmed by the government.

The violence occurred after a very short-lived amnesty agreement over the weekend when authorities released 234 detained protestors and promised to drop charges against them. In exchange for their release, protestors left Kiev City Hall and removed some of the barricades blocking traffic. 

Protestors then marched to the square on Tuesday afternoon, still determined to press Yanukovich to resign, and to restore the 2004 constitution that was amended after Yanukovich's election in 2010. 

The demonstration took a turn for the worst when the Party of the Regions postponed the debate on the legislative changes demanded by the opposition, causing police to try to block the 20,000 protestors from entering the capital building. 

Protestors then began throwing cobblestones at police, who tossed tear gas at the demonstrators. 

On Monday, Russian Finance Minister Anton Siluanov said Moscow would buy another $2 billion in Ukrainian bonds, which is a portion of the $15 billion in loans and energy subsidies. Protestors see the bailout as an attempt to buy Yanukovich's allegiance to the Eurasian Union, which has been supported by Russian President Vladimir Putin as an alternative to the E.U. 

Moscow has bought $3 billion in Ukrainian debt, but put the rest on hold after Ukrainian Prime Minister Mykola Azaov resigned.