Four suspects, among them a 14-year-old boy, will spend seven days in police custody as investigation into the murder of Pamoja FM radio presenter continue.
Mohammed Hassan Marjan was killed last weeks ago while heading home from work.
The four suspects appeared before Kibra Law Court on Tuesday, but no charges were read out to them.
Police believe the suspects ambushed the journalist and stabbed him to death in a dark alley.
Marjan was from hosting his nightly show that centred on Islamic teachings.
Detectives have been analysing CCTV footage that captured the scene of the crime.
According to the Directorate of Criminal Investigations detectives, they narrowed down on the juvenile after reviewing a CCTV footage retrieved from the control centre at Jogoo house.
“Following the appalling murder of 62-year-old Mohammed Hassan of Pamoja FM Radio, DCI detectives today arrested a 14-year-old juvenile positively identified after an analysis of IC3 CCTV footage,” DCI said.
“In a group of four others, the suspect accosted the deceased who was heading to his place after duty at the said radio station, violently robbed him in which process they stabbed him on the left side of the chest killing him instantly,” DCI further said.
The deceased’s bag with his belongings was recovered outside a house near the scene.
Shortly after Marjan was murdered, Kibra residents lynched one of the suspects behind the murder.
Marjan was an active member of the Kibra community policing committee although police are yet to establish the motive of the crime.
Detectives said they are also pursuing a woman said to have been harbouring the attackers.