The Somali armed Islamist group al-Shabab has seized a United Nations helicopter, along with about eight people, both passengers and crew, local sources have told the BBC
The helicopter landed in territory controlled by the group in central Somalia.
Some reports said it had been forced to make an emergency landing, while others said the landing was a mistake.
Al-Shabab controls large parts of southern and central Somalia.
The group is affiliated to al-Qaeda and has waged a brutal insurgency since 2006. BBC
