Four Locust Grove High School students who ingested a drug and passed out on campus Friday are out of the hospital, authorities said.

The girls — ages 17, 15 and two 14-year-olds — were taken to hospitals just before 10 a.m. after voluntarily taking a liquid substance believed to be the party drug GHB, AJC.com previously reported. Two of them were taken to Piedmont Henry Hospital, while the others were taken to Children’s Hospital of Atlanta.

RELATED: Student arrested after 4 friends ingest party drug, pass out at Henry County school

The incident led to the arrest of a 15-year-old girl, who is charged with possession of GHB, possession with intent to distribute GHB, reckless conduct and disruption of a public school, authorities said.

No names have been released.

The Henry County Sheriff’s Office previously said the five girls are friends, and the drug was purchased inside a school bathroom Friday morning.

MORE: What is GHB?

The incident led to Locust Grove being placed on lockdown.

Chief Deputy David Foster said Monday that the case remains under investigation and no other arrests have been made. No other information was provided.

This isn’t the first time this year students have fallen sick after eating something at school.

On Valentine’s Day, 28 students at Sandtown Middle School in Fulton County were taken to the hospital after eating candy believed to have been laced with THC.

RELATED: Valentine's snack at south Fulton school contained THC

Four of the students were kept overnight for observation after eating the snacks and showing signs of drug intoxication, including hallucination, red, watery eyes and “frantic” crying.

ALSO: Fulton schools say sickened kids showed signs of 'drug intoxication'

The GBI tested the snacks and said THC was found in one of the 46 food samples collected by school police. Five Sandtown students believed to be responsible for distributing the drug-laced candy were disciplined by the school.

MORE: 5 students face discipline in edible drug case at Fulton County school

In August, a dozen Butts County middle school students got sick after ingesting an assortment of hard candy at Henderson Middle. Police tested 27 bags of the candy but found no evidence of drugs and could not determine what made the children ill.

RELATED: Candy ruled 'completely safe' after a dozen students fall ill

In other news:

A sheriff's deputy is in jail, charged with murder??after a deadly shooting in Athens, authorities said.