University of Las Vegas defensive lineman Ryan Keeler died Monday, sources told the Las Vegas Review-Journal.

The cause of death has not yet been released.

Keeler was a sophomore in college after transferring from Rutgers before last season.

UNLV Rebels kicking helmets and team gear wait on the sidelines during the game between the UNLV Rebels and the San Jose State Spartans on Friday, October 7, 2022 at CEFCU Stadium in San Jose, California. (Douglas Stringer/Icon Sportswire via Getty Images)

The 6-foot-6, 275-pound Keeler played in two games for the Rebels, totaling eight tackles and one sack in those contests.

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Current and former UNLV players offered their condolences to Keeler’s family via social media Monday night, including running back Aidan Robbins.

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«Long live 47,» he wrote in his Instagram story.

A general view of the stadium as players warm up before the start of the game between the UNLV Rebels and the Fresno State Bulldogs at Allegiant Stadium on November 7, 2020 in Las Vegas, Nevada.

A general view of the stadium as players warm up before the start of the game between the UNLV Rebels and the Fresno State Bulldogs at Allegiant Stadium on November 7, 2020 in Las Vegas, Nevada. (David Becker/Getty Images)

Robbins added another one that read: «God rest your beautiful soul… I love you 4L [for life] boy.»

Marcus Arroyo was the Rebels’ head coach last season before being fired after posting a 5-7 record, bringing his total to 7-23 in his three seasons there. Throughout the season, he praised Keeler for his versatility on the field.

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«We get to see some guys,» Arroyo said, according to the Las Vegas Review-Journal. «It’s not what you’d want to do, obviously, in a situation where you’ve got all your guys rolling, but it was good to see Ryan come in and mix it up.»

A UNLV Rebels helmet is displayed on the sideline during the team's game against the Hawaii Warriors at Sam Boyd Stadium on November 4, 2017 in Las Vegas, Nevada.

A UNLV Rebels helmet is displayed on the sideline during the team’s game against the Hawaii Warriors at Sam Boyd Stadium on November 4, 2017 in Las Vegas, Nevada. (Sam Wasson/Getty Images)

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Keeler was a product of Nazareth Academy in Chicago during his high school days.