The Gambia’s President-elect Adama Barrow in a tweet early this morning said that he is to be sworn in as president of The Gambian in that country’s embassy in the Senegalese capital Dakar at 4pm local time.
Earlier reports had suggested he would be inaugurated at a location in The Gambia.
It follows the failure of last-ditch negotiations to persuade defeated President Yahya Jammeh to step down.
A deadline has now passed without Mr Jammeh leaving power.
A BBC correspondent in the capital, Banjul, says it is eerily quiet and everything has come to a standstill; people are staying indoors:
West African military forces are poised to move in to enforce the transfer of power.
Unconfirmed reports say troops from Senegal have already crossed the border to secure a number of towns, with the help of Gambian soldiers.
Mr Jammeh – who has been in power for more than two decades – disputes the election result.