Gambian President Yahya Jammeh is refusing to step down despite the threat of military intervention by neighboring states.
Adama Barrow, who beat him in elections last month, is due to be inaugurated as the new President today, but Jammeh has ignored the deadline.
Mauritanian President Mohamed Ould Abdel Aziz failed to break the deadlock at last-minute talks with Jammeh.
West African military forces are ready to enforce a transfer of power.
Senegalese troops remain stationed at the Gambian border, despite the deadline for Jammeh to stand down passing at midnight.
The threat of military action is supported by Nigeria and other states in the region.
However, Gambian Army Chief said his troops would not fight Senegalese forces should they enter into the country.
According to AFP General Ousman Badjie said we are not going to involve ourselves militarily as this is a political dispute.
Jammeh has ruled the Gambia since taking power in a coup in 1994.
Meanwhile, thousands of UK and Dutch tourists continue to be evacuated from the tiny West African state on special charter flights.
Gambia is a popular beach destination among European holidaymakers, especially in winter.