NEW : Chadian president wants journalists , flight crew released . Red Cross , Red Cross , UNHCR interview children that charity tried to fly out of Sudan . Most are not from Sudan and have families , agencies say . 11 members of Zoe 's Sudan , Six others under arrest in Chad .
NEW : Chadian president wants journalists , flight crew released . Red Cross , UNICEF , UNHCR interview children that charity tried to fly out of Chad . Most are not from Sudan and have families , agencies say . Six members of Zoe 's Ark , 11 others under arrest in Chad .