There has been more unrest in the east of Ukraine.
In Donetsk pro-Russian protesters have seized another government building – this time dozens of them stormed the offices of the military prosecutor.
The building appeared to have been empty of all staff and security.
Meanwhile outside Ukrainian flags were set alight.
The self-styled Donetsk People’s Republic plans to hold a referendum on autonomy by May 11.
In Slovyansk gunshots were heard at a checkpoint as pro-Ukrainian forces continued trying to take back control of the city from rebels.
Although the troops claim to have taken up positions on the outskirts of the town, armed pro-Russian militants are said to be holding their ground in the centre.
While in Mariupol, video posted on a social media site purportedly shows a Ukrainian bank’s headquarters on fire.