RALEIGH, N.C. (AP) — North Carolina State University reported it has identified a cluster of COVID-19 cases associated with its athletics department.

The school made the announcement Wednesday on its website, but did not say how many people tested positive. A “cluster” is defined by the N.C. Department of Health and Human Services as five or more cases in close proximity.

The school said those who tested positive are being isolated and quarantined. Contact tracing also has been initiated.

WRAL-TV had reported on Wednesday that the school's women’s basketball team postponed a game due to concerns about the virus. It’s not clear if the cluster was within the basketball team.

The University of North Carolina at Chapel Hill also reported on Wednesday that a COVID-19 cluster was identified among students who stayed on the campus during winter break.