Police officers on Monday, February 12, arrested the brother of murder suspect Kelvin Kang'ethe believed to have helped orchestrate the escape plan from Muthaiga Station on Wednesday, February 7.
Reports indicated that Kang'ethe met up with his brother in Kiambu moments after escaping and has since been the contact person.
The brother's girlfriend, considered a person of interest, is in custody and has been included in the investigation as detectives continue their manhunt.
Preliminary investigations also revealed that the suspect relied on mobile phone numbers registered by relatives to evade police as his phone signals were switched off.
"The two (Kang'ethe and his brother) linked up moments after the suspect escaped and they have since switched off their mobile phones. It is highly believed that they are currently together," an officer told the media.
Following the escape, a special multi-agency team was formed to hunt down the suspect who had been in hiding for six days.
At the time, Kang'ethe was awaiting a ruling on whether he would be extradited to face a first-degree murder charge in connection with the death of Kenyan nurse Margaret Mbitu at a US-based airport in November last year.
The detectives are piecing together clues to unearth persons whom Kang'ethe has been in contact with after the escape.
Kang'ethe cousin, Beatrice Ng'ethe, was also arrested on Friday last week in connection with the incident.
Police sought to investigate if Ng'ethe, an advocate, played any role in securing Kang'ethe's freedom from the cells. This is after phone calls revealed that she was in constant communication with the suspect days before the incident.
"She was released as we investigate the matter," a police source revealed to the media.
The incident has since gained international attention with observers questioning how a suspect who was put on the red notice could sneak out of a heavily guarded police station in broad daylight.
