While analyzing the body language during the witness's testimony, I noticed that he exhibited micro-expressions of doubt and uncertainty when claiming that he was sure about identifying the suspect. Specifically, his eye movements showed hesitance, and he looked up and to the right -- an indicator of accessing constructed thoughts instead of recalling actual memories. This could signify that the witness was being untruthful or manufacturing the identification aspect of his testimony.
The witness testified that he was absolutely confident in identifying the suspect, and insisted that he was at the crime scene during the incident.
You are a body language expert testifying in court about a crucial witness's testimony. Explain one particular signal you identified that undermines the witness's credibility.