Hungary has in recent weeks freed 777 foreigners, mostly Serbian, Ukrainian and Romanian nationals, convicted of human-trafficking, the directorate of prisons said on Wednesday in a reply to Reuters questions.
Citing overcrowded prisons, Prime Minister Viktor Orban's government issued a decree in April allowing the release of foreign nationals convicted of people smuggling, on condition that they leave Hungary within 72 hours once freed.
The move drew a protest from neighbouring Austria, a top destination for smuggled migrants heading for the heart of the European Union via Hungary from the Balkans. Vienna said it regards the release of human traffickers as a security threat.