Dynamo Kiev-Valencia match in doubt
UEFA is monitoring the situation in Ukraine ahead of Thursday's Europa League action in the country.
Dynamo Kiev are playing Valencia in the last-32 and Tottenham fans are using the city as a stopping point on their way to their clash with Dnipro in Dnipropetrovsk, some 220 miles to the south-east of the capital.
There have been nearly three months of anti-government protests that have paralysed parts of the country's capital in a struggle over the identity of a nation divided in loyalties between Russia and the West.
The violence has recently escalated, with Ukrainian authorities saying 25 people have died and more than 240 have been injured during clashes between police and anti-government protesters since Tuesday.
There is some doubt about Dynamo Kiev's game going ahead although club president Igor Surkis has attempted to allay fears about safety for those travelling with Valencia and made assurances the Olimpiyskiy Stadium is ready to host the match.
Sky Sports' Kaveh Solekhol reported on Wednesday lunchtime that the Valencia squad is still in Spain waiting for the go-ahead to fly to Ukraine.
A UEFA spokesman said: "We are monitoring the situation and a further update is expected today."