Officials say five Serbia citizens have returned home after spending 21 months in captivity in Libya.
Deputy Prime Minister Aleksandar Vucic said the men flew back to Serbia on May 21 following months of negotiations.
The five, who said they were working on road construction in Libya, were seized by rebels during the uprising that toppled Muammar Qaddafi.
They were accused of being mercenaries fighting alongside Qaddafi's forces and were held in detention in the northwestern town of Zintan.
Vucic said securing the men's release was "difficult."
Over a year after Qaddafi's regime was toppled, Libya is plagued by lawlessness and violence.
Based on reporting by AP and AFP