Nicaragua says it has arrested 18 people posing as journalists, who were traveling with millions of dollars in cash.
Nicaraguan National Police Chief Aminta Granera said the group carrying $7 million in cash was detained earlier in the week when it attempted to enter the country from Honduras.
Granera said several of the detainees have been confirmed as Mexican citizens. She said the group, traveling in six vehicles, had posed as reporters from Mexico's Televisa, but were found to have no link to the media company.
Drug-running cartels have cultivated Central American supply lines as Mexico's government wages a military offensive against drug gangs throughout the country.
There have been more than 50,000 drug related killings in Mexico since President Felipe Calderon took office in 2006.
Some information for this report was provided by AP and Reuters.