New York, Oct. 19 -- The brother of the Honduran president was convicted Friday in a massive drug conspiracy case in New York City after prosecutors said he relied on "state sponsored drug trafficking" enabled by the Central American leader.

Juan Antonio "Tony" Hernandez, 41, a former Honduran congressman, was stoic as the verdict was announced by a jury that deliberated over parts of two days. He was convicted of drug conspiracy, weapons charges and lying to the Drug Enforcement Administration. His attorney promised to appeal.

The two-week trial put a spotlight on the lucrative drug trade between the United States and Honduras, where thousands of migrants have fled toward the U.S. border with Mexico.

On Twitter, Honduras President Jua...