The suspect trying to steal in the building of the Supreme Court of Justice carried radios and equipment belonging to the construction company that performs reinforcement work on the property.
The man, named Martinez Morales, was arrested on Sunday morning by officers of the Public Force in the basement of the building.
Martinez is investigated for the crime of simple theft.
Although unofficially indicated that the subject would have tried to steal in offices of magistrates, this version was not confirmed by the authorities.
The case is still under investigation to determine how the subject entered the property.
The building of the Supreme Court of Justice is the subject of a series of reinforcement works that could take several months.