BATON ROUGE, La. (AP) A 75-year-old Louisiana woman who founded an African American history museum was discovered dead in the trunk of a car, and police said Saturday that investigators were working diligently to find those responsible.

Baton Rouge police Sgt. LJean McKneely said investigators were still waiting for a coroner to determine a cause of death for Sadie Roberts-Joseph after her body was found Friday afternoon.

The Advocate reported Roberts-Joseph was the founder and curator of the Baton Rouge African American Museum, which she started in 2001. The museum sits on the campus of New St. Luke Baptist Church, where Roberts-Josephs brother is pastor.