The central government restated Thursday its position opposing the entry of more illegal migrants.
The announcement follows an outline of plans to handle migrants that was released Wednesday.
A Casa Presidencial statement said that some 2,000 foreigners already were in the country and that there are large groups of Cuban migrants who want to leave Colombia on the way to the United States.
President Luis Guillermo Solís was quoted saying that the country was respectful of human rights and dignity of migrants but that current conditions do not permit the entry of migrants or the possibility that they stay in the country.
The government said Wednesday that about 80 percent of the migrants now in the country were from Haiti, although they have been considered of African origin. All are seeking to cross the U.S. southern border illegally, but Nicaragua has closed its borders to such migrants trapping them in Costa Rica.
There are similar groups trapped in Panamá and Colombia.
Casa Presidencial said that the government has put into operation an effort to detain migrants who have not presented themselves to immigration officials for temporary permission to stay. The government said the plan was to deport the illegals to their country of origin.
The government said Wednesday that from 100 to 150 illegals are entering the country each day. Of course, these individuals are assisted by traffickers at the border, and the assistance of officials there could not be ruled out. More police have been ordered to the southern border.