Detectives have revisited the house of the alleged suspect of the Kware killings where they recovered a blood-stained hammer.
The team also recovered a dressing mirror with fingerprints, a mattress, a blood-stained pillow, a red t-shirt, a pair of pliers, two kitchen knives, four pairs of women's shoes and a ganny bag.
The team was accompanied by the suspect Collins Jumaisi Khalusha when they revisited the house on Wednesday morning and spent five hours there.
They also recovered a sisal and manila ropes and a notebook with hospital receipts with the name of a woman.
Khalusha is the prime suspect in the macabre murder of at least 42 women in the city and claims he met all of them on the streets.
Detectives concluded the house was his primary scene of crime.
This was after they also found blood stains on the walls and floor which he told them were from some of the victims.
Police claim Khalusha said he strangled the women in the process, left the body on a nylon paper in his house before he embarked on dismembering the body and later dumped the same at the dumping site about 500 meters from his house.
He at times allegedly used the hammer in the mission.
Most of the victims were women from the slum where he also lived.
Police said the suspect told them that he would take away the belongings of his victims and give them out to his friends or sell them.
These included mobile phones, clothes, cash, bags and other valuables.
Police say the suspect claimed he was motivated by the hatred he developed for his late wife after she squandered her businesses twice.
Police are now trying to document all the victims amid fears the identification may be complicated
Khalusha alleged in court that police coerced him into confessing to the killings.
“My client, as he sits there, is in dire need of urgent medical attention…for reasons that during the period under detention, he was subjected to molestation, torture and the confession that the public is being treated to having murdered 42 persons is laughable,” lawyer John Maina Ndegwa argued on Khalusha's behalf before the Makadara Law Courts.
Police have denied the claims.
Police said they want to take the suspect for mental tests among other probes.