The aid agency Concern has announced that one of its Liberian workers has died, after displaying symptoms of Ebola.
Definitive results on the cause of 42-year-old Dauda Konneh's death are expected in the next few days.
Concern says it is "deeply saddened" by the news and is supporting his wife and two children at this "difficult" time.
In their statement, the agency also says, "while the spotlight in the past week has been on Sierra Leone’s three-day ‘lockdown’, fatalities from Ebola in Liberia are now three times higher than Sierra Leone."
Meanwhile another Irish agency, GOAL, has appealed for medical workers to join them in their Ebola treatment centres in Liberia.
It comes as new figures from the US predict the virus could infect 1.4 million people in west Africa by January.
Senior Manager Darren Hanniffy is in Liberia. He told Newstalk Breakfast their crews are stretched in their efforts to tackle the virus:
