The Somerset County Health Department asked the Trump National Golf course in Bedminster to provide a list of everyone who worked and attended President Donald Trump's fundraiser. 

Gov. Phil Murphy said so far the golf course is cooperating. He urged anyone who was there to self-quarantine and ultimately get tested.

"Even then if you test negative, you really have to stay off the field for the full 14 days and probably would want to get tested again at the end of that period," he said. 

Local health officials haven't said whether anyone else at the event tested positive or how many people were in attendance. The state health department said it was coordinating with the county.