John Muinde, a forensic document examiner attached to DCI headquarters, appeared before the Kibera High Court on Wednesday, November 11, where he presented findings from an examination of signatures appearing on Cohen's original will and a printed version held by his wife, Sarah Wairimu.
Testifying as the prosecution's 27th witness, Muinde told the court that the documents contained notable inconsistencies, with some sections showing signs of possible manipulation.
He further questioned the authenticity of a letter allegedly written by Cohen to officers at Parklands and Spring Valley police stations, requesting the withdrawal of an assault case against Wairimu.
The examiner said the signatures on the letter did not match known handwriting samples belonging to Cohen. The disputed correspondence was reportedly prepared days after the businessman had already been killed.
The hearing also revisited the circumstances surrounding Cohen's disappearance, with former Kilimani Criminal Investigations Officer Fatuma Adi Ali recounting what Wairimu allegedly told detectives when questioned in July 2019.
Fatuma testified that Wairimu claimed her husband had travelled to Thailand after the two shared breakfast at their home on July 20, 2019. She further alleged that Cohen had apologised and promised to withdraw a divorce case before leaving for the airport.
However, investigators questioned why Wairimu had no airline details and had neither contacted Cohen's relatives nor reported him missing despite his prolonged absence.
During cross-examination, the defence challenged Fatuma's account concerning telephone numbers allegedly provided by Wairimu. The former investigator stood by her testimony.
Former Gigiri Sub-County Commander Richard Mwangi and government pathologist Peter Ndegwa also appeared as witnesses.
The trial is expected to continue on Thursday as the prosecution advances its case.
Link;
https://citizen.digital/article/tob-cohen-murder-trial-dci-examiner-exposes-discrepancies-in-signatures-on-original-will-forged-letter-n393748
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