Police in Baton Rouge have arrested a suspect in connection with the death of Sadie Roberts-Joseph, a community activist who founded the African American History Museum in Baton Rouge, La.

Authorities announced on Tuesday they believe a man who was a tenant in a building Roberts-Joseph owned killed her. Police said the man owed her $1,200 in rent, though police said the exact motive is still under investigation.

That man, Ronn Jermaine Bell, has been arrested and charged with first-degree murder.

"There's no information to lead us to believe this is a hate crime," Baton Rouge Police Chief Murphy Paul said. "There's no information that leads up to believe that this incident was motivated by Mrs. Sadie's activism or community efforts."

Police found Roberts-Joseph's body in the trunk of her car Friday afternoon, not long before Hurricane Barry touched down on the Louisiana coast Saturday.

Officials said Roberts-Joseph, 75, died of traumatic asphyxia, and the East Baton Rouge Parish Coroner ruled the death a homicide.

Bell is a registered sex offender who served 7 years in prison starting in 2007 for sexually abusing a minor, authorities said Tuesday. Before he was identified as a suspect in the death of Roberts-Joseph, he had been arrested on a warrant for not making a court fee payment connected to the sexual abuse case.

Roberts-Joseph organized an annual Juneteenth festival at the museum and was known throughout her community just as Mrs. Sadie.

Her death sent shock waves through the city.

"She was one of the standout matriarchs of Baton Rouge. She was part of the fabric of Baton Rouge. And that is why you see so many people concerned about her death," Baton Rouge Mayor Sharon Weston said. "We will make her death a priority," she said. "Because of what she gave to so many here."

Roberts-Joseph's daughter, Angela Machen, said at the news conference that "as heinous" as the act was, her passing has united Baton Rouge, something Roberts-Joseph was committed to her whole life, Machen said.

"All my mother ever wanted was for this community to come together," Machen said. "What she wanted to happen in life came to fruition in death."

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