Dallas Cowboys defensive end Marshawn Kneeland dies at age of 24

• Team has not released cause of player's death

• Kneeland had scored first career touchdown on Monday

The Dallas Cowboys defensive end Marshawn Kneeland has died at the age of 24, the team announced on Thursday.

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.