The new grave was discovered during exhumation of the earlier human remains discovered by herdsmen at the quarry.
So far, three bodies have been discovered in the mass grave, with pathologists saying they will also start exhuming bodies in the new grave.
The exhumation is being undertaken by police and officials from the Chief Government Pathologist’s office led by Dr Johansen Oduor.
Kajiado County Commissioner Kamau Kobia says they suspect a tussle over land between various brokers selling land belonging to the East African Portland Cement Company.
According to police, several people including some of the land brokers have been reported missing since the tussle started earlier this year.
On Sunday while touring the scene, the Chief Government Pathologist Johansen Oduor said the exhumation would help the police in their investigations.
READ Monday exhumations to unravel Kitengela mass grave mystery
Oduor says more bodies might be found at the site, besides the three bodies that were recovered on Saturday.
“What I have seen is that there are some three skulls which are intact attached to body parts… some of the body parts are decomposing; the bodies look very freshly buried within the last three months. In the quarry, some areas have loose soil that looks disturbed, there might be more bodies,” he had said.
After exhumation, Oduor says they will take the bodies to the City Mortuary where they will conduct post-mortems.