(KMZA)--Four positive cases of COVID-19 have been reported in the Prairie Hills USD 113 school district since Friday.

According to text alerts sent by the district, the first case was reported Friday---a teacher at Sabetha High School.

The second case was reported Sunday--a student at the Wetmore Academic Center.

The third and fourth cases were reported Tuesday.  They include a student at the Sabetha Middle School and an adult employee at the Wetmore Academic Center.

In reference to their established protocol, the district said the areas the positive cases may have impacted were cleaned and disinfected.

USD 113 said it is in contact with Nemaha County Community Health Services and will take the steps necessary to protect the health of its students and staff.

Each individual who tested positive has been quarantined for at least 10 days.

Parents are urged to closely monitor students for COVID-19 symptoms and to not send their student to school if exhibiting these symptoms.