When prosecutors opened the murder trial over the death of teacher and blogger Albert Ojwang last month, they didn't rely on eyewitnesses or confessions. They brought surveillance cameras into the courtroom instead. For hours, CCTV footage from inside Nairobi's Central Police Station played on screens, tracking the movements of former OCS Samson Tallam, police officers James Mukhwana and Peter Kimani, former GSU Unit officer John Ngige Gitau, Gin Ammitou Abwao and Brian Mwaniki Njue. The recordings placed them at critical locations before Ojwang was found dead, becoming the backbone of a prosecution that illustrates how technology is reshaping Kenya's criminal justice system.
This shift matters because it's changing who can be held accountable. Cases that once went cold for lack of witnesses now proceed on the strength of digital trails that can't be intimidated or bought off. CCTV footage, mobile phone data, DNA analysis, geospatial mapping, M-Pesa transactions, digital photographs and forensic examination of electronic devices have all become indispensable investigative tools, allowing detectives to reconstruct crime scenes, establish timelines, trace suspects' movements and corroborate witness testimony.
When Power Couldn't Hide
The conviction of former Migori Governor Okoth Obado demonstrates how digital evidence can pierce through wealth and political influence. No witness saw Sharon Otieno being killed, yet the prosecution relied on mobile phone evidence, digital records and vehicle tracking data to corroborate testimony from 42 witnesses and reconstruct the conspiracy that led to her death. Justice Cecilia Githua found that Obado's former PA Michael Oyamo had deliberately acquired an Airtel line using a stolen identity card shortly before the murder, intending to conceal his identity when communicating with Sharon and others involved in executing the plan.
M-Pesa records showed money flowing from Obado to Sharon while he tried to persuade her not to reveal their relationship or her pregnancy. Investigators established that Sharon and the journalist with her were instructed by their abductors to switch off their mobile phones just before they were driven away, preventing any subsequent tracking. The vehicle used had its tracking device disabled on the day of Sharon's abduction. Justice Githua said disabling the tracking system was evidence of planning and an attempt to conceal the movements of those involved in the crime. She concluded that Obado had financed the plot, Oyamo coordinated its execution and Obiero helped to cover it up after the killing. DNA tests on the foetus confirmed Obado was the biological father of the unborn baby.
Protesters' Deaths Under Digital Scrutiny
The inquest into the death of Rex Kanyike Masai, shot during the anti-Finance Bill protests on June 20, 2024, will heavily rely on CCTV footage, forensic video analysis and mobile phone triangulation to reconstruct the events leading to his shooting. NPS persuaded the court to allow fresh testimony from witnesses who had already testified, despite opposition from the IPOA, which had already closed its case. The court permitted NPS to recall representatives from the Integrated Command, Control and Communication Centre, Absa Bank, International Life House and Bliss Hospital, whose evidence is expected to shed light on CCTV footage and the sequence of events on the day of the protests.
IPOA's lead investigator, Justin Nyatete, said the investigation faced attempts to frustrate the probe, including misleading information from key police officers, missing deployment records and alleged interference with the arms movement register at Central Police Station. Forensic video analysis of CCTV footage and photographs identified an armed undercover officer in civilian clothing at Moi Avenue and Mama Ngina Street. Nyatete said the officer's facial features, distinctive birthmark, clothing and accessories matched those of Police Constable Isaiah Murangiri Ndumba. IPOA obtained Murangiri's registered mobile phone numbers from Safaricom after he allegedly provided investigators with a number belonging to another person. Phone records, metadata and cell-site triangulation were then used to place his handset in the CBD and near the protest route around the time Rex was shot.
As the investigation into the murder of Dr Victoria Mutiso continues, detectives are pursuing several lines of inquiry following the July 29 shooting. They're following various leads, including forensic analysis of CCTV footage and call data records. At least eight suspects have been named, including three police officers.
Military Base Murders Exposed
Technology proved decisive in solving the murder case involving former Kenya Air Force Major Peter Mwaura Mugure, recently sentenced to life imprisonment for murdering Joyce Syombua and their two children. M-Pesa records showed Mugure had sent Joyce money to facilitate her journey from Nairobi to Nanyuki with the children days before they disappeared. Mobile phone records later placed Joyce and the children inside the military base after they arrived. Experts extracted data from mobile phones belonging to the victims and witnesses, helping investigators reconstruct their movements before the killings. Messages deleted from Mugure's phone, a recovered SIM card and digital records all corroborated witness testimony. DNA analysis confirmed the children's paternity, providing prosecutors with a compelling motive for the murders. Justice Martin Muya concluded that the combination of witness testimony, digital evidence and forensic analysis proved the murders had been meticulously planned.
Lawyers and Journalists Tracked to Their Deaths
The murder trial of lawyer Willie Kimani, his client Josephat Mwenda and taxi driver Joseph Muiruri shows how comprehensive digital evidence can be. They disappeared after leaving Mavoko Law Courts on June 23, 2016. Their bodies were later recovered from a river near Donyo Sabuk after being killed. Justice Jessie Lesiit considered more than 6,100 pages of documents, 117 exhibits and evidence from 80 witnesses before passing judgment. CCTV recordings showed Kimani being picked up by taxi driver Muiruri in Westlands before travelling to Mavoko Law Courts, where he was representing Mwenda in a criminal case. After the court session, investigators say the trio was abducted and taken to Syokimau Police Post. Police communication records traced the movement of radio equipment used by officers implicated in the killings, placing the devices at several locations, including Mlolongo Police Station, Syokimau Police Post, Mombasa Road, Eastern Bypass and near the site where the victims were murdered and their bodies stashed. Former AP officer Fredrick Leliman was sentenced to death. His former colleagues Stephen Cheburet and Sylvia Wanjiku were sentenced to 30 and 24 years in prison, respectively.
In the prosecution of Joseph Irungu, alias Jowie, convicted of murdering businesswoman Monica Kimani, investigators reconstructed Kimani's final journey using airport surveillance systems. Passenger records established that she travelled from Juba aboard a Kenya Airways flight on September 19, 2018. CCTV footage from JKIA tracked her movements from the aircraft to immigration, the baggage hall and finally to the taxi rank, where she boarded a cab to her apartment in Nairobi. A Safaricom data analyst produced evidence showing that Irungu had communicated with Ms Kimani weeks before her death, contradicting his claim that he didn't know her. The court viewed a video recovered from Irungu's mobile phone showing him inside Kimani's house before her murder. Justice Grace Nzioka rejected Irungu's denial that he knew the deceased, finding that the telephone records and digital evidence demonstrated the two had been in contact before the killing.
Why This Matters:
The integration of digital evidence into Kenya's criminal justice system represents more than a technological upgrade. It's a shift in accountability that particularly matters for cases involving powerful suspects or state actors. When governors, military officers and police can be convicted based on digital trails they couldn't erase, it signals that wealth and institutional position offer less protection than they once did. For families of victims like Sharon Otieno, Rex Masai, Willie Kimani and Joyce Syombua, technology has provided what witness testimony alone couldn't deliver: an unblinking record that survives intimidation and corruption. The cases show how M-Pesa records, CCTV footage and mobile phone data can reconstruct conspiracies even when perpetrators tried to cover their tracks by disabling tracking devices, using stolen identities or pressuring witnesses. This matters especially in a context where IPOA investigators report facing misleading information from key police officers, missing deployment records and alleged interference with evidence. Digital evidence doesn't eliminate these obstacles, but it creates alternative paths to justice that are harder to block.