A suspect has now been arrested in the hazing death of Southern University student Caleb Wilson. Investigators — who are now referring to Wilson’s death as a hazing incident — say many more arrests are expected.

The death of a 20-year-old Southern University student in Baton Rouge, Louisiana, is being investigated by local law enforcement as a possible act of fraternity hazing, school authorities confirmed to The Associated Press on Wednesday.

Caleb Wilson, a junior at Southern University, died on Feb. 27. Unsanctioned fraternity activities may have caused his death, the university said.