The organisers of the Special Olympics World Games in Dublin, Ireland have been asked to ensure that the 26-member delegation from Ghana will arrive in time for the start of the games on Saturday.
The delegation is due to fly to London tomorrow, following a mix up over their visas at the weekend, but there are fears they may have to spend the night at Heathrow Airport.
It is understood another delegation, from Sierra Leone, has also been having visa problems.
A Special Olympics Host Committee in Co Monaghan has been told the delegation, due to arrive in Castleblaney today, will not now be travelling to the town.
The delegation is now due to arrive in Dublin on Friday, on the eve of the opening ceremony.
More than 7,000 athletes from 160 countries are taking part in the Special Olympics, which are expected to attract as many as 500,000 spectators.