El Salvador’s government sent more than 250 Venezuelans it was holding in a maximum-security prison to Caracas in exchange for 10 Americans detained by Venezuelan President Nicolás Maduro’s government, U.S. and Salvadoran officials said.

Venezuelan migrants imprisoned for months in El Salvador under a U.S. immigration crackdown have reunited with their families.

Some 250 Venezuelans deported from the US to El Salvador will be exchanged for 10 Americans held in Caracas, according to officials.