Spectator dies at US Open in Wisconsin

The United States Golf Association has confirmed that an elderly spectator has died while attending the US Open at Erin Hills.

A 94-year-old man who was attending the US Open in Wisconsin has died on Friday. (AAP)

A 94-year-old man who was attending the US Open in Wisconsin has died on Friday, the United States Golf Association (USGA) said in statement.

Washington County Sheriff Dale Schmidt told the USGA he appeared to die of natural causes. No other information was provided.

"The USGA was saddened to learn that a spectator at Erin Hills passed away a short time ago," the statement read.

"Out of respect for the family, we are unable to provide additional information at this time.

"Our thoughts and prayers are with those surrounding this individual during this difficult time."