The State Department did not say how he came to be released alongside a group of “wrongfully detained” prisoners.

One of the 10 American citizens or residents freed by the government of Nicolás Maduro in a recent high-profile prisoner exchange with the United States was a fugitive convicted of a triple murder in Spain,

The Trump administration said it was protecting Americans unjustly held abroad. One of the rescued men, Dahud Hanid Ortiz, killed three people, according to court documents.