UPDATE 3:30 p.m. EST:
The blimp's pilot suffered burns that aren't considered life-threatening, according to ABC News.
UPDATE 1:45 p.m. EST:
Justin Maynard of AirSign said his company's operations team on the ground told him the pilot is "OK" but is being taken to a hospital, the Associated Press reported.
AirSign is based in Florida.
UPDATE 1:27 p.m. EST:
Justin Maynard, the sales manager for the advertising company operating the blimp that crashed at the U.S. Open, said he believes the pilot is alive but is "not 100 percent" sure, the Associated Press reported.
Maynard said the pilot was the only person aboard the blimp.
UPDATE 1:07 p.m. EST: The U.S. Open Twitter feed said the pilot was injured.
UPDATE 1:04 p.m. EST: The Golf Channel reported that an emergency crew is on the scene.
ORIGINAL STORY: A blimp caught fire and crashed Thursday at the U.S. Open golf tournament at Erin Hills Golf Course in Hartford Bay, Wisconsin, WBAY of Green Bay reported.
Early reports and videos posted on social media indicate that people parachuted out of the blimp, which was shooting aerial footage of the tournament.
It isn't yet known whether anyone was hurt.
Eyewitnesses shared video of the crash.
"We were watching a group finish on 18 and beyond the green we saw the blimp falling," eyewitness Adam Johnson told WBAY via Twitter. "It appears the pilot parachuted out. There is smoke rising from the site."