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A rodeo bull has hopped a fence surrounding United States arena and run through a concession area into a parking lot, injuring at least three people before wranglers caught up with it, officials say.
The crowd at the 84th Sisters Rodeo in the Oregon city of Sisters was singing along with Lee Greenwood's God Bless the USA on Saturday night (Sunday AEST), most with their cellphone flashlights on, as the bull ran around the arena.
Before what was to be the final bull ride of the night, the bull hopped the fence, according to a video shot by a fan.
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Other videos posted online showed the bull running through a concession area, knocking over a rubbish can and sending people scrambling.
The bull lifted one person off the ground, spun them end over end, and bounced them off its horns before the person hit the ground.
The Sisters Rodeo Association issued a statement on Sunday saying three people were injured "as a direct result of the bull, two of whom were transported to a local hospital", KTVZ-TV reported.
Rodeo livestock professionals secured the bull next to livestock holding pens and placed it in a pen, the association said.
Deschutes County sheriff's Sergeant Joshua Spano said several ambulances were called to the scene.
Deputies transported one patient with non-life-threatening injuries to a hospital, and a deputy also sustained minor injuries when responding to the bull's escape, Lieutenant Jayson Janes told KTVZ on Sunday.
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Danielle Smithers was among the rodeo fans with her cellphone flashlight on as the bull named Party Bus was moving around the ring with two riders on horseback as the crowd sang and swayed to the music.
"About 30 seconds into it I stopped and I looked at it and I thought to myself, 'this is just too beautiful not to have a video'," Smithers said.
She shut off her flashlight and "started recording the bull, just following him, making his loop and as he started coming around his second loop in my video, he goes right over" the fence, she said.
The Professional Rodeo Cowboys Association said Saturday's incident is a reminder that "while rodeo is a highly-entertaining sport, on very rare occasions it can also pose some risk".
"PRCA sends our thoughts and well wishes to those who were injured or otherwise impacted by this frightening and very rare incident," the association said.
Officials with the Sisters Rodeo couldn't be reached to ask if an investigation was planned.
The rodeo's final performance on Sunday went on as scheduled.
Sisters is about 39 kilometres north-west of Bend, Oregon.
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