16 agents that arrested Mr. Acosta Calderón.30 50(24) On October 17, 1991 the Secretary of the Social Rehabilitation Center of Ambato certified that Mr. Acosta Calderón had presented excellent behavior and discipline during his detention in this center.31 50(25) In his preliminary examination statement of October 18, 1991 Mr. Acosta Calderón reiterated his innocence, he pointed out that he had been imprisoned since November 15, 1989 and that up to the date of his statement no physical evidence had been presented against him. Therefore, he requested that the corresponding procedure by started with the urgency required by his situation.32 50(26) Later, Mr. Acosta Calderón requested that his preliminary examination statement be included in the record and considered evidence in his favour. He also claimed that the irregularities in the process were cause for its complete nullity and he challenged the statements offered by the police officers Jorge Luna, Edison Tobar, and Raúl Toapanta (supra para. 50(13)) and he requested that when they offered their statements they be “cross-examined as per the question sheet” he presented to the Court. Finally, he insisted on the reversal of the arrest warrant due to non-compliance with the requirements demanded by Article 177 of the Code of Criminal Procedures.33 50(27) On November 19, 1991 the Judge of Criminal Matters of Lake Agrio resolved that Mr. Acosta Calderón’s preliminary examination statement be entered as evidence.34 50(28) On December 10, 1991 the Criminal Prosecutor of Sucumbios set forth his opinion that the drug seized should be destroyed.35 50(29) On December 17, 1991 the Judge of Criminal Matters of Lake Agrio ordered that the opinion of the prosecutor be added to the process and that the Provincial Health Authority of Napo, in the city of Tena, certify if the physical evidence seized was located at that institution in order to proceed with its destruction.36 30 Cfr. ruling of October 8, 1991 issued by the Criminal Judge of Lake Agrio (dossier of annexes to the petition, annex 10, leaf 137). 31 Cfr. certificate of good behavior of October 17, 1991 issued by the Social Rehabilitation Center of Ambato (dossier of annexes to the petition, annex 10, leaf 142). 32 Cfr. preliminary examination statement of October 18, 1992 given by Mr. Acosta Calderón before the Criminal Judge of Lake Agrio (dossier of annexes to the petition, annex 10, leafs 146 and 147). 33 Cfr. brief of defense (undated) presented by Mr Acosta Calderón to the Criminal Judge of Lake Agrio (dossier of annexes to the petition, annex 10, leaf 141). 34 Cfr. ruling of November 19, 1991 issued by the Criminal Judge of Lake Agrio (dossier of annexes to the petition, annex 10, leaf 144). 35 Cfr. record of December 10, 1991 issued by the Criminal Prosecutor of Sucumbios (dossier of annexes to the petition, annex 10, leaf 149). 36 Cfr. ruling of December 17, 1991 issued by the Criminal Judge of Lake Agrio (dossier of annexes to the petition, annex 10, leaf 150).