A powerful explosion on Monday outside Ukraine's parliament killed one Ukranian national guardsman and wounded at least 90 security personnel.
Four of the injuries were serious - including one officer who lost both of his feet - according to a national guard.
“Explosives were lobbed from a crowd of demonstrators wearing T-shirts with the logo of Svoboda, a far-right party” Ukraine’s Interior Minister Arsen Avakov said on his Facebook account.
Meanwhile, 30 protestors were arrested during the clashes.
Security forces used batons and pepper spray against the protestors. Moreover, smoke bombs also were used, but it was not clear exactly whether those devices were used by police or demonstrators.
“The president would address the nation later on Monday following the clashes outside parliament, where deputies loyal to him managed to push through a first reading of a 'decentralisation' draft law - but only in the face of strong criticism from some of his political allies” Ukrainian President Petro Poroshenko's spokesman said.
Despite the violence, the two sides agreed last week to stop the violence on Sept. 1.
The bill was submitted by Ukrainian President Petro Poroshenko in accordance with February's Minsk cease-fire agreement. 265 lawmakers of the 368 supported the bill on Aug. 31.
Minsk II agreement was signed in Feb. 2015 between the leaders of Ukraine, Russia, France, and Germany to take measures in order to appease the ongoing war in the Donbass Region of Ukraine.
Almost 7,000 people have been killed since fighting broke out in the region last year, following the deposing of pro-Russian leader Viktor Yanikovych, who fled the country folowing pro-EU protests in Kiev.