Six Loudoun County middle school students were caught Thursday at school under the influence of alcohol, the county sheriff’s office said.

The students at J. Michael Lunsford Middle School in Chantilly were between the ages of 12 and 14, according to a news release from the sheriff’s office. The students were found to have been drinking after one went to the school’s clinic about 10 a.m. complaining of illness.

School officials and school resource officers from the sheriff’s office suspect that the students drank alcohol at the school before classes began.

Parents were notified. None of the students involved needed medical attention.

The incident was under investigation, the sheriff’s office said.