A police chief in Delaware says charges will be filed by the end of the week in connection with the death of a 16-year-old high school student.

Wilmington Police Chief Bobby Cummings told news outlets on Monday that police and the state Office of the Attorney General have three individuals who are of interest in connection with the deadly assault of Amy Inita Joyner-Francis last week.

Joyner-Francis died after she was involved in a fight in a school restroom at Howard High School. She was pronounced dead as she was being transported by helicopter to a hospital.

Cummings says investigators are currently reviewing social media posts, phone communications and interviews with witnesses. He says charges will be filed, but investigators are trying to determine how severe those charges will be.