• Mary Wambui, 23, who is believed to be an accomplice and who was harbouring the gang in her house at Pangani was also arrested.
•The four suspects are awaiting arraignment.
Detectives on Monday arrested four suspects who were captured on CCTV footage robbing a man at Kilimani on June 25.
Several items recovered.
The four were traced down to their hideouts in Kawangware, Gatina and Pangani.
They are 27-year-old Timothy Jahan Muzami alias 'Timo' who was captured on camera hitting the victim with a firearm on the forehead and Humphrey Minyata alias "Daddy" aged 23 years, captured on camera pointing a knife at the victim.
Mary Wambui, 23, who is believed to be an accomplice and who was harbouring the gang in her house at Pangani and Ali Musa alias 'Ally' aged 26 were also arrested during the operation and is believed to be an associate of the gang.
The four suspects are awaiting arraignment.
The four suspects were seen in a CCTV footage pointing a gun to the harmless man who was walking alone.
They snatched his bag and pickpocketed him before running away.
The attack happened in a broad daylight, raising questions from Kenyans over the insecurity in the city.