A deadly, undiagnosed disease that has been spreading in one region of the Democratic Republic of Congo (DRC) may be linked to malaria, health officials said Thursday.

As of Dec. 14, the latest date for which data is available, 592 cases have been reported as well as 37 confirmed deaths in addition to 44 deaths under investigation, according to the Africa Centres for Disease Control and Prevention (Africa CDC), the public health agency of the African Union.

This is a developing story. Please check back for updates.