Three more people were on Thursday found alive in the Huruma building that collapsed six days ago pushing the number of those rescued in a single day to four.
Earlier, at around 11.47am, a team of rescuers found a woman trapped in the rubble and managed to pull her out at around 3pm.
As the rescue mission continued, three more people — a man and two women — were pulled out at around 6pm.
Woman was weak but with no visible injuries, National Disaster Management Unit Incident Commander Pius Maasai said.
She has been rushed to Kenyatta National Hospital after being attended to by doctors at the scene.
The Kenya Defence Forces cleared debris to allow them to pull her out.
A Kenya Red Cross official said the woman had been trapped in a corner and was put on oxygen and intravenous fluid before being rescued.
On Tuesday, a baby girl was rescued unscathed from the rubble, four days after the building collapsed.
Seven-month-old Dealeryn Saisi was found sleeping in a basin wrapped in a blanket.
On Wednesday, rescuers said there was hope of finding more survivors after nine rabbits were pulled alive from the debris.
The rescue of the woman brings to 137 the number of people pulled from the rubble since Friday.
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