Equatorial Guinea international Owono was sent off in the second division clash on November 2 after racing into midfield and colliding with De Miguel while trying to clear an aerial ball.
FC Andorra goalkeeper Jesus Owono was suspended for 12 matches by the Spanish football federation's disciplinary committee on Friday after his challenge on Jesus de Miguel resulted in the death of the Tenerife striker last week.
Equatorial Guinea international Owono was sent off in the second division clash on November 2 after racing into midfield and colliding with De Miguel while trying to clear an aerial ball.
After the collision De Miguel, 30, was placed in intensive care in hospital and the Spanish forward died on November 3.
"The assessment of the conduct under consideration in these proceedings must be based on the facts expressly recorded in the referee's report, which states that the player was sent off for 'violently striking an opponent in the chest with his leg, using excessive force, while the ball was in play'," said the committee in a statement.
"The tragic outcome of the incident, resulting in the death of Jesus de Miguel Alameda, 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."
