SULLIVAN COUNTY, Ind. (WTWO/WAWV) — The investigation into what caused a routine chemistry experiment to go wrong and injure four students at North Central High School continues.

Northeast Schools Corporation Superintendent Dr. Mark Baker says the school is assisting investigators in whatever way they are needed.

“We are cooperating fully to see what the cause was and to make sure this doesn’t happen again,” said Dr. Baker

Just before 3 p.m. Tuesday, the AP Chemistry class at NCHS was performing an outdoor experiment when an accident occurred injuring four students.

Dr. Baker added that representatives of the State Fire Marshal’s Office came to the scene Wednesday to ask questions and get information regarding the incident. They reportedly spoke with the teacher involved and took the chemicals that had been used to be tested.

Dr. Baker was unable to tell us what those chemicals are believed to be at this time.