FACTBOX: What is Zoe's Ark?

(Reuters) - Most of the 103 African children which French group Zoe's Ark had planned to fly out of eastern Chad as orphans had families who included at least one close relative, U.N. agencies said on Thursday.

Chadian authorities are holding 16 people in connection with the case, including nine French nationals who have been charged with abduction and fraud after they were detained trying to fly the children to Europe to live with families.

Here are some details about the French organization Zoe's Ark, (L'Arche de Zoe) which has said it intended to help the children, not abduct them, and that it acted legally.

* The group was created by a group of French motoring enthusiasts in the wake of the tsunami that devastated parts of Asia on December 26, 2004. They set up four temporary camps in Banda Aceh in Indonesia.

* The organization has a president, Eric Breteau, and a general secretary and around 50 active volunteers.

* In April, Zoe's Ark announced a campaign to evacuate 10,000 orphans from Sudan's Darfur region alongside other French charities including Sauver le Darfour (Save Darfur).

* It said it wanted to place orphaned Darfuri children aged under five in foster care with French families, invoking its right to do so under international law.

* The general secretary, Stephanie Lefebvre, told the Le Parisien daily late last month the organization never aimed to have the children in its care adopted, and simply wanted to save them from starvation.

* A seven-strong team, which included a doctor, a nurse and fire-fighters, was based in Chad. Lefebvre said the group sought authorization from French authorities to grant safe passage to the children it intended to bring back to France, so Zoe's Ark could seek the right of asylum for them.