European security watchdog OSCE has lost contact with one of its teams of election monitors near the eastern Ukrainian town Donetsk, where rebels are fighting with government forces.
The four-strong team were last heard from at around 6pm on Monday.
In a statement it said: "We are continuing with our efforts and utilising our contacts on the ground. The Ukrainian government as well as regional authorities have been informed."
More top news
Liverpool edged an epic penalty shootout to beat Middlesbrough and progress to the fourth round of the Capital One Cup.
The world famous musical, which has been running on Broadway since 1997, has broken records earning more than £2.8 billion.
There will be wet weather around tonight with rain drifting from north to south which will lead to scattered showers tomorrow morning.