Two more people have died from an unknown illness that infected people who attended a funeral earlier this week in Liberia’s Sinoe county, south-east of the capital, Monrovia.
The deaths bring the total to 11.
Five people remain in isolation and four others have been discharged after being stabilised, Liberia’s Chief Medical Officer Francis Kanteh has told BBC’s Focus on Africa programme.
The authorities have said this is not another outbreak of Ebola.
Further tests have yet to show the cause of the strange illness but the health ministry plans to send more blood specimens to laboratories outside the country, including in the US, which have the capacity to identify the cause of the infection.
Officails have advised the public to observe precautions implemented during the recent Ebola breakout, including washing of hands.