Seven persons who came into contact with the deceased have been tested in order to curb the possibility of spread.
The management has however appealed to residents of the state not to panic, also stating that they would ensure close monitoring of other infected patients.
According to Channels TV, Dr. Darlington Obaseki, a senior management staff of the hospital, said six other patients have been isolated to limit the spread of the virus.
Obaseki also mentioned that 7 other people who had come in contact with the victim have been tested.
The Lassa Fever is the latest disease to have plagued the country since its last and successful fight against the Ebola Virus, which came into Nigeria through a Liberian diplomat.
Lassa Fever is deadly and is said to be transmitted through rodents like rats. It was first described in 1969 in Lassa, a town in Bornu State, Nigeria.