Bodies of twin babies wrapped in a polythene bag have been retrieved from Nairobi River during a clean-up activity.
It raises the number of dead foetuses retrieved from the river near Korogocho area in the last one week to eight.
Nairobi Governor Mike Sonko has called for an investigation, describing the incidents as a "worrying trend".
Four bodies of adults have also been retrieved from the river since the launch of the clean-up drive late last year.

Three people die in Mexico World Cup celebrations as fans crowd streets
US and Iran enter technical talks to secure peace deal, shipping restart
After Venezuela quakes, citizens lead rescues amid military theft accusations
Two dead after wildfire guts house in northern Greece
Afghanistan launches airstrikes on IS targets on border with Pakistan
Bangladesh warns of dengue surge as weather aids spread
Fourteen children killed in Pakistan after tutoring centre roof collapses
Supreme Court rejects Trump bid to restrict birthright citizenship
