Nearly 1,000 people in Sierra Leone have been put under quarantine following the death of a 67-year-old woman who tested positive for Ebola.

It comes five days into a six-week countdown for the country to be officially declared Ebola-free.

The quarantine will last for three weeks, provided no new cases are recorded.

More than 11,000 people have died since the start of the Ebola outbreak in Sierra Leone, Guinea and Liberia.