Eleven international chemical arms investigators are believed to have been kidnapped in Syria, according to the Syrian foreign ministry.
They were abducted as they tried to visit a town where alleged chlorine gas attacks have recently been reported.
A statement from the ministry's official SANA news agency said: "Two cars were seized by terrorist groups carrying 11 people- five of them Syrian drivers and six from the fact-finding mission."
More top news
Donald Trump has wasted no time making his mark on international matters as well as domestic. So how will his presidency affect the world?
Another cold, frosty and foggy night for many. Northern and western areas will see thickening cloud, patchy rain and milder temperatures.
Temperatures have already plunged to -12C in some parts of the UK this winter - but Thursday could be the coldest day yet.