(AP) James Dolan, the executive chairman of Madison Square Garden Company and owner of the New York Knicks, has tested positive for the coronavirus.

The Knicks announced Dolan’s diagnosis Saturday night. It is not clear when he was tested or when he received the diagnosis.

Dolan is the first U.S. major pro sports owner known to have tested positive for the virus.

“The Madison Square Garden Company Executive Chairman and Chief Executive Officer Jim Dolan has tested positive for coronavirus,” the team’s statement said. “He has been in self-isolation and is experiencing little to no symptoms. He continues to oversee business operations.”

New York has been the hotspot for the pandemic in the U.S.

All 50 U.S. states have reported some cases of the virus that causes COVID-19, but New York has the most, with over 52,000 positive tests for the illness and more than 700 deaths. About 7,300 people were in New York hospitals Saturday, including about 1,800 in intensive care.

For most people, the new coronavirus causes mild or moderate symptoms, which can include fever and cough but also milder cases of pneumonia, sometimes requiring hospitalization. The risk of death is greater for older adults and people with other health problems.

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