Speaking from Donetsk, ITV News' European Editor James Mates has reported that Pro-Russian separatists have said that "no other" OSCE observers will be released, "any time soon."
One of the eight European observers being detained by pro-Russian separatists in the eastern Ukraine city of Slaviansk was released today, after suffering from "mild diabetes."
More top news
David Cameron has pledged to reduce the annual benefits cap to £23,000 "within the first few days" of a Conservative election win.
Ed Miliband is to outline Labour's "10-year plan" for the NHS after warning it faces "its most perilous moment in a generation".
Argentina's president has announced plans to disband the country's intelligence services following the death of a state prosecutor.