Erie County Executive Mark Poloncarz said those tests were performed by the county's Public Health Lab and completed late Saturday afternoon.

BUFFALO, N.Y. — Three Erie County residents have tested positive for coronavirus, according to New York Gov. Andrew Cuomo on Saturday night.

In a statement, Erie County Executive Mark Poloncarz said those tests were performed by the county's Public Health Lab and completed late Saturday afternoon.

Poloncarz said Erie County Department of Health epidemiologists "are already at work to identify the close contacts of these individuals and to place those close contacts in mandatory quarantine to monitor for COVID-19 symptoms."

He added that the county will hold a news conference at 11 a.m. Sunday to provide more details.

Buffalo Mayor Byron Brown issued a statement on Saturday night:

We have been planning and preparing for this eventuality. Government has been working together at every level to ensure that we deal with this public health emergency with calm, cooperation and a spirit of community. I ask that everyone follow the Department of Health recommendations to help contain the spread of Coronavirus, and we will do our best to provide everyone with any assistance or information that they need as this situation continues to unfold.

Cuomo briefed the media during a conference call.

The news comes on a day where New York State reported a second death from coronavirus.

More than 600 New Yorkers have been diagnosed so far with COVID-19, the new illness that has sickened people around the globe.

As of Sunday there were 613 confirmed cases of coronavirus in New York State. The governor said on Saturday, that 117 people are currently hospitalized.

Tioga County and Tompkins County both had their first confirmed cases on Saturday. And Monroe County currently has two confirmed cases.

Governor Cuomo said the state did 700 tests.