A Briton working for Save the Children who was kidnapped three days earlier in western Somalia is being treated well, a spokeswoman for the agency said on Sunday.
Masked gunmen abducted the Briton and a Somali co-worker on Thursday from a compound in the town of Adado, near the border with Ethiopia. The Somali was later released.
"We can confirm he is being looked after and he is in good health," said Anna Ford, speaking in the Kenyan capital, Nairobi. "But we are still extremely concerned about him."
She declined to say how Save the Children got the information about the Briton's state of health. Ford, however, said the kidnappers had not contacted the agency nor had they contacted the kidnappers.
Several forces have gunmen in the area around Adado, including factions of militias allied to the government.
Kidnapping for ransom is common in Somalia, which has not had an effective government for 19 years. Hostages are rarely hurt and people are usually freed after a ransom is paid.