Nicaraguan President Daniel Ortega, 75, who is running for a fourth consecutive term, has launched a broad campaign of repression since early June aimed at decimating the opposition ahead of November elections, according to analysts, human-rights activists and Western governments.
In recent days, police beat one opposition presidential hopeful before putting him in prison.
Another would-be opposition candidate was arrested shortly after he filmed a video saying goodbye to his family in case he, too, was detained.
A third prominent opposition leader was photographed by police after they stormed his home to arrest him.
The various potential candidates had all been jockeying to be nominated on behalf of the opposition, a loose coalition of parties and civic groups.
Daniel Ortega, Biden, Kamala Harris
U.S, Central America, Nicaraguan
Western, Latin America