LOCUST GROVE — The Henry County Sheriff’s Office is investigating a medical emergency at Locust Grove High School in which four female students apparently ingested a combination of chemicals and/or drugs.

All four students were taken to area hospitals for treatment. The identity of the substance was not immediately known.

According to J.D. Hardin, executive director of communications and public relations for the school system, the school was put on a "temporary soft lockdown" to allow medical personnel access to areas of the school needing assistance.

HCSO Chief Foster said the school was no longer on lockdown as of 12:30 p.m. He said that after the school resource officer called in the incident, the school was put on lockdown "until we knew what we had," then was lifted. He confirmed that the investigation is ongoing. 

Henry County Schools released a statement on Friday morning.

"Emergency responders and school resource officers responded to a medical emergency this morning at Locust Grove High School after four students were reported to have ingested an unknown substance," the statement reads. "As a result, the students were transported to area hospitals for treatment. These students' parents have been notified. There is a further investigation underway into the matter, but the most important thing at this point is the health and wellbeing of the students needing medical attention. They are currently receiving it at area hospitals. District leaders and school officials are supporting the school at this moment, and all classes are proceeding as scheduled."