A 94-year-old spectator died during Friday's second round of the U.S. Open at Erin Hills, officials said.

"Washington County Sheriff Dale Schmidt has informed the USGA that the deceased was a 94-year old male who has appeared to have died of natural causes," the United States Golf Association said in a statement.

Fox 6 News of Milwaukee reported that the Washington County medical examiner was called to the scene at around 2 p.m.