The International Criminal Court (ICC) authorized prosecutors to use the recorded testimony of a key witness, identified as “P-1100,” in the case against former Philippine President Rodrigo Duterte.

In a 15-page decision issued Oct. 2, ICC Trial Chamber III granted the prosecution’s request to introduce P-1100’s written statement as evidence under Rule 68(3) of the court’s Rules of Procedure and Evidence.

The chamber also approved five documents related to P-1100’s testimony, saying they are an integral part of the witness’ statement and are necessary to understand it.

Three of the five documents were reports that P-1100 personally wrote and submitted. The other two documents were also considered by the chamber as part of the witness’ recorded testimony.

However, the chamber rejected four other documents submitted by prosecutors because they were not sufficiently explained or used by P-1100 during the testimony.

The rejected documents are identified as PHL-OTP-0000-1794, PHL-OTP-0000-1795, PHL-OTP-0000-1796 and PHL-OTP-0000-1799.

The chamber said the defense may still use those documents when questioning the witness. If the defense later asks the court to admit them as evidence, the chamber said it would consider the request anew.

The court also limited the prosecution to one hour of additional questioning, instead of the two hours it had requested, to help keep the proceedings focused and efficient.

The chamber further reminded prosecutors to carefully select the evidence they seek to introduce, particularly when dealing with a large number of witnesses and supporting documents.

It cautioned against what it called “wholesale dumping” of evidence, or the introduction of repetitive documents or materials with very limited relevance.

The chamber said the approach is intended to keep the trial focused and expeditious while protecting the rights of the accused.

The ICC is hearing the case against Duterte over alleged crimes against humanity linked to his administration’s so-called war on drugs and his earlier anti-drug campaign in Davao City.