A Dallas Cowboys defensive end was found to have a medical condition at the time of his death. Marshawn Kneeland had stage 1 chronic traumatic encephalopathy, also known as CTE. This condition was present when he died by suicide last year.

Further information about his death and condition can be found through CBS Texas. Details about Marshawn Kneeland's situation are available through CBS Texas in the DFW area, which reported on his diagnosis and death.