OMAHA, Neb. (AP) – A Nebraska hospital says an Ebola patient being treated in its biocontainment unit has died. Nebraska Medical Center said in a news release Monday that Dr. Martin Salia died as a result of the disease.

Salia contracted Ebola while working as a surgeon in Sierra Leone. He arrived Saturday to be treated at the Omaha hospital, where two other Ebola patients have been successfully treated.

Ebola has killed more than 5,000 people in West Africa. Salia was a citizen of Sierra Leone.