Irish aid agency Concern has announced that one of its staff members has died in Liberia.
The Liberian man, who worked as a community development officer for construction, presented at an Emergency Ebola Unit to be tested on Friday.
He had been receiving treatment for typhoid, which has similar symptoms to Ebola.
Definitive results on the cause of the man's death are expected in the coming days.
Speaking on RTÉ's Morning Ireland programme, Concern's Head of Overseas Operations Anne O'Mahony said the cause of Dauda Konneh's death has yet to be confirmed.
She said: "Dauda Konneh had been working with us for about two-and-a-half years.
"He's a father-of-two. He was aged 42 years and he had been ill for a while. He had a history of typhoid and ulcers and he presented at the clinic.
"Initially, they felt that he didn't fit the profile. He had to go for treatment of his illnesses elsewhere even though he presented some of the symptoms of Ebola. At the end of the day, he wasn't seen and he died while queuing to get tested.
"We have not confirmed as yet that it is Ebola but we are taking all the precautions that it may have been."
Earlier this week, the World Health Organisation said the deadliest Ebola epidemic ever had killed 2,811 in west Africa.
The UN health agency said a total of 5,864 people had been infected in five west African countries as of 18 September.
