Sayid was convicted of burning his pregnant wife, Luul Abdiaziz, to death.
He had quarrelled with the deceased at a hotel where they were taking tea before he took a panga nearby and attacked him before the victim later succumbed to the wound.
Ochieng had been arrested with six others including DJ Joe Mfalme and three police officers at Kîkûyû police station who were released after investigations, and listed as witnesses in the case.
The unit, formed due to an increase in cases, was also tasked with monitoring content that propagates online hate and incitement.
DCI says detailed statements by persons of interest have been recorded and more data sourced from digital platforms to ensure all leads are used.
Missing Voices further reported that the number of victims of enforced disappearances also decreased, from 22 in 2022 to 10 last year.
Forensic investigations established that Julius Osoro was at the scene where Adan Mohamed was attacked and his Sh4 million stolen.
Thuo developed complications after taking the beer and was rushed to a hospital in Thîka before he was pronounced dead at Aga Khan Hospital.
A preliminary probe showed the criminal was attempting to break into a workshop when the deceased persons met their death.
The suspects will be in custody until April 22, when a court will rule on the DCI's application to hold them for 21 days.
Allan Ochieng, the first respondent in the case, has been remanded seven days ahead of formal charges at the Kiambu High Court.
The funding from the World Bank will be utilised to improve water supply and implement programmes benefiting disadvantaged youth in urban areas.
The trio killed Njambi on January 24, 2018, by torturing and dousing her body with sulfuric acid.
Alfred Mwangi, who goes by the stage name Marsh Kiddy, is accused of stabbing his friend and fellow performing artiste David Kabaka.
Some residents said Gerald Mangela's death may have resulted from business rivalry or a deal gone wrong.
This comes after the security officials arrested 26 panga-wielding gang members who are believed to be involved in last week's attack in Diani.
The seven are being held at Muthangari police station where they have since recorded their statements.
The DJ, his bouncer, driver, and photographer are currently detained at Kabete Police Station
Sergeant Ahmed Rashid, the infamous undercover cop who led the Starehe SPIV team, is charged with the murders of the two men.
Kang'ethe has 21 days to make his formal application for bail and bond so that the courts can decide whether to release him or not before his extradition proceedings are concluded.