A custodian at Iroquois High School found a very early fetus in a sanitary napkin receptacle Monday morning.
The coroner's office said the male fetus was spontaneously aborted, or miscarried. The fetus, estimated at less than 20 weeks gestation, never took a breath.
Students were kept in their first-period class while police and EMS were on the scene.
Principal Joey Riddle said no student has presented themselves with medical complications or come forward.
Metro Police spokesman Dwight Mitchell said the person who put the fetus in the receptacle could face a misdemeanor charge of abuse of a corpse or tampering with physical evidence if the person was located, and if the charge was appropriate after interviewing the person.
The school has surveillance tapes that they are reviewing.
"At 8 a.m. this morning, a custodian found what appeared to be a very early term fetus in one of our girl's restrooms. Our SRO was notified; he in turn notified police who began an investigation. At this time, I'm unaware if it occurred here at school or at another location. I am sending home a letter to parents, encouraging parents to talk with their sons and daughters. Teenage pregnancy can be a very confusing thing, but we need to maintain open lines of communication with their children to ensure that they're safe and healthy," Riddle said.
Metro Police said there does not appear to be anything criminal that occurred.