One national guard member has been killed and about 100 injured in violent protests outside Ukraine's parliament, the interior ministry said.

Clashes between nationalists and riot police erupted after MPs gave initial backing to reforms for more autonomy in the rebel-held east.

National guardsmen were pelted with fire crackers and petrol bombs as explosions were heard.

The reforms are part of a peace plan to end fighting in eastern Ukraine.

Protesters led by the populist Radical Party and the ultra-nationalist Svoboda (Freedom) party - who fear the loss of the east to Russian-backed separatists - gathered outside parliament early on Monday.

After a rowdy debate, 265 MPs out of 450 backed the first reading of the decentralisation bill, granting more powers to areas of Donetsk and Luhansk.

Initially, there were only minor clashes but a BBC correspondent then heard small explosions followed by a much larger one - apparently from a grenade.

BBC