The incident and the sanction
Owono, 25, was sent off during a second-division match between FC Andorra and Tenerife on November 2 after colliding with De Miguel, 30, while trying to clear an aerial ball. De Miguel died in hospital on November 3.
The committee imposed the maximum punishment, citing the referee's report, which states that Owono was sent off for "violently striking an opponent in the chest with his leg, using excessive force, while the ball was in play."
"The tragic outcome of the incident, resulting in the death of Jesus de Miguel, is public knowledge. In view of the nature of the conduct described and the accompanying circumstances … the maximum sanction, 12 matches of suspension, is justified," the committee said.
The 2-2 scoreline will stand after the game was abandoned seven minutes into stoppage time.