The four, held captive for almost a year, were found by Turkish soldiers on the border with Syria blindfolded and with their hands bound.
The French parliament will this week vote upon recognition of children kidnapped from La Réunion used to boost France's rural population.
French president Francois Hollande personally greets priest and praises his 'courage' during seven weeks captivity in hands of armed group.
French president Francois Hollande announces the release of priest who was kidnapped in November in Cameroon, near Nigerian border.
France says it paid no ransom for the release of the three adults and four children kidnapped in February, who are reported to be in good health.