(CNN) At least 20 people were killed Thursday after a car bomb detonated in the Colombian capital of Bogota, according to the country's National Police.

Police said 68 others were injured in the blast, which occurred outside the Gen. Santander National Police Academy.

Rubble litters the ground after an apparent suicide attack at a Colombian police academy Thursday.

A high-ranking police official told CNN that the explosion appeared to be the result of a suicide attack.

The perpetrator, identified as José Aldemar Rojas Rodríguez, also died in the attack, police said in a statement.

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