According to the DCI, the arrest also came with the recovery of various stolen items.
Citizen TV has become the largest television station by market share since its launch in 1999.
Images shared online showed Brian's family members inside a police vehicle.
One officer has already lost his life in the mission that started in June last year.
Raila has been underpressure to declare his stance ahead of the 2027 polls.
SK Macharia has been a long-time supporter of Raila Odinga.
Sifuna made the remarks during the burial of retired Kenya Air Force pilot James Gitahi.
The president made the pledge during his recent tour of the country.
This incident follows violent protests in Nairobi over the similar alleged killing of a 17-year-old boy.
The calls for a review in the cut-off points come amid plans by KUCCPS to open its portal for university course applications.