Gov. Andrew Cuomo has directed the state's Department of Health to investigate a potential COVID-19 exposure at a drive-in high school graduation ceremony in Westchester.

A student who had recently traveled to Florida attended the event and subsequently showed symptoms before testing positive for COVID-19.

Since then, four more individuals who attended the ceremony and had contact with that student also tested positive for the virus.

The ceremony was held for graduates of Horace Greeley High School and took place on June 20 at the Chappaqua train station.

All individuals who tested positive are currently self-isolating.

People tell News 12 that students and parents were out of their cars and not social distancing.

The first student who tested positive also participated in a non-school related Field Night event on the same day. The event was attended by juniors and seniors from surrounding school districts.

Everyone who came into contact with the infected student is asked to quarantine until July 5. The DOH and Westchester County Health Department are working with officials to identify all individuals who attended the event.

The New York State Contact Tracing Program will be reaching out to identified individuals, and anyone who attended the ceremony or subsequent gatherings should get tested.

The Chappaqua Ambulance Corps has temporarily shut down its youth program since a number of students have tested positive.