Baton Rouge's top prosecutor said Monday he would recuse himself from any state criminal investigation into the shooting death of Alton Sterling, a black man, by two white police officers.

East Baton Rouge District Attorney Hillar C. Moore III cited his professional relationship with the parents of one of the officers, Blane Salamoni, as the reason for stepping aside. Salamoni's parents have both worked for Baton Rouge police, and Moore says they've interacted directly and worked on hundreds of cases in common.

Moore also said his office hasn't made any decisions on charges against protesters who were arrested over the weekend during demonstrations against recent controversial police killings.

Moore said those decisions will be made on a case-by-case basis.

Police made nearly 200 arrests over the weekend in Baton Rouge.