Marist College is extending virtual learning through Tuesday after a spike in COVID-19 cases.

As of Sunday, the number of students with COVID-19 at the Poughkeepsie school is at least 25 - more than double the number of cases on Friday.

A total of 21 students are being isolated at home or off campus, while four students are isolated on campus.

Dutchess County Executive Marc Molinaro warns that those numbers could increase.

"We believe we've identified all those who came into contact with principals at that event. We're in the contact tracing process. There's likely to be more that have contracted the disease. Marist acted appropriately and is working with the Health Department," he says.

Administrators at Marist are taking swift action in the hopes of containing the spread of the COVID-19 cluster.

Remote learning has been extended through Tuesday. The Fulton Street townhouses at the campus are now under precautionary quarantine, and on and off campus activities have been suspended.

No visitors are allowed on campus until further notice.

Marist is also requiring several rounds of targeted COVID-19 testing for students.

All students are required to comply - even if they have been recently tested.