DENVER — A bull rider died from injuries he suffered during an event at the National Western Stock Show on Tuesday night, the Professional Bull Riders Association said.

Mason Lowe of Exeter, Missouri, was ranked 18th in the world by PBR. He had been a professional rider for seven years.

Lowe was competing in the PBR Chute Out, a test of how long a rider can stay up and atop an out-of-control bull.

Lowe was thrown from the bull and the animal came down on his chest. It’s believed to be the first bull-riding death in the 119-year history of the stock show.

“We are deeply saddened to report that Mason Lowe passed away this evening following injuries sustained at the PBR event in Denver,” said Sean Gleason, president of the Professional Bull Riders Association.

“The entire PBR and National Western sports family extends our heartfelt condolences and deepest sympathies to Mason’s wife Abbey and his family.”

Lowe, 25, had earned nearly $10,000 in competitions so far this year.

“He was fully protected with chest protectors and face protectors, but just one poor placement of a bull coming down on you in a certain area can do great damage and obviously that’s what happened in this instance,” said Paul Andrews, president and CEO of the National Western Stock Show.

“Our hearts are really broken today.”

Andrews said there will be an in-arena fundraiser on Wednesday night to honor Lowe. Money raised will go to Lowe’s family. There will also be a video tribute to Lowe at 7 p.m.

“Our hearts, our prayers, we’re heartbroken for our friends at the PBR,” Andrews said. “It’s just an unfortunate situation that really breaks our hearts.

“I’m sure it will be a very sincere and heartwarming event this evening in honor of Mason.”