Prorussiske huliganer i Øst-Ukraina har tatt en buss med internasjonale observatører til fange nær Slovjansk.
On Friday, Ukraine’s interior ministry said armed separatists had seized seven representatives from the Organisation for Security and Cooperation in Europe (OSCE), as well as five Ukrainian army personnel and a bus driver.
The German foreign ministry confirmed 13 people had been detained.
Pro-Russian leaders in Sloviansk confirmed that the bus had been stopped and said they were checking the identities of the people on board.
The seized observers are not part of the main OSCE monitoring mission, which had been agreed after long negotiations by Russia, Ukraine and the United States.
Instead, they appear to be unarmed military observers from individual OSCE states. The German defence ministry, which is in charge of that mission, earlier confirmed that it had lost contact with the group.