STEUBEN, Maine — A substitute teacher at Ella Lewis School in Steuben has been forbidden on school property pending the outcome of a police investigation into alleged inappropriate conduct with a student.

Police are being very cautious about releasing information but confirmed Monday that an investigation is under way. No teacher has been arrested or summoned, Sgt. John Cote of the Maine State Police Criminal Investigation Division said.

“Steuben school officials reported what they believed was a case of inappropriate contact between a staff member and a student,” he said.

Wayne Enman, interim superintendent of RSU 24, said Monday the substitute was someone school officials were familiar with and had used often to fill in when a classroom teacher was absent.

He said the teacher was female and the student male.

Enman said an alleged relationship between the pair was discovered as a result of some text messages another teacher saw on the boy’s phone. The school principal then reported the situation to authorities. Enman said RSU 24 is not conducting its own investigation but rather is waiting for a final police report.

Because the investigation is open and ongoing, Cote would provide no information. He would not discuss the age of either the teacher or the student, but Ella Lewis School enrolls students from kindergarten to grade eight.

Cote said more information may be available early next week and a possible indictment could be sought at the next seating of the Washington County grand jury.