A professional bull rider was allegedly shot and killed by his girlfriend late Monday following a competition at the Utah State Fair, police said.

Demetrius Omar Lateef Allen, 27, was found mortally wounded outside a Salt Lake City apartment complex shortly after midnight and rushed to an area hospital, where he was later pronounced dead, according to a press release issued by Salt Lake City police.

Cops later charged his girlfriend, 21-year-old LaShawn Denise Bagley, with murder and felony discharge of a firearm.

Allen, a Texan who competed under the name Ouncie Mitchell, was ranked 23rd in the nation by the Professional Rodeo Cowboys Association, KSTU News reported.

“These two, we believe knew each other, they had attended the fair and then ended up at a bar and ended up arguing,” Detective Michelle Peterson told the outlet. “Then the male wanted to get some of his property from the apartment that he was staying in, while he was attending the fair and a gun was pulled out and he was shot.”

Police said Bagley is being held at the Salt Lake County Metro Jail.

“I don’t understand and I don’t know how long it’s going to take me to understand,” Ezekiel Mitchell, Allen’s cousin, told KSTU.

“The guy that would give the shirt off his back to anybody, why would you take his life away?”