Cowboys second-year DE Marshawn Kneeland dies at 24

Dallas Cowboys defensive end Marshawn Kneeland died Thursday morning, the team announced.

"It is with extreme sadness that the Dallas Cowboys share that Marshawn Kneeland tragically passed away this morning. Marshawn was a beloved teammate and member of our organization. Our thoughts and prayers regarding Marshawn are with his girlfriend Catalina and his family," the team said in a statement.

He was 24.