Rita was a third-year student.
Police have named the two suspects William Ovie Opia, and Johnbull Asbor, who are in custody after being arrested in a rented flat in Ndenderu, Kiambu County.
Opia had an expired Nigerian passport and Asbor had lost his passport two years ago, police said.
The police seized several items from the suspects' apartment, including a butcher's knife and a small axe suspected to have been used in the killing and mutilation of the university student.
Her remains were discovered in plastic bags at a rental apartment in Roysambu, on 14 January. Her head was missing, along with her phone and other personal items.
Police asked the Court to keep the men in custody until 31 January, as their investigations were continuing. The magistrate granted their request.
A protest over femicide will be held on the 27th of this month. DCI has also taken over the case. they will do a forensic test on the head that was recovered in Kiambaa.
The head was recovered in Kiambaa Dam in Kiambu County on Sunday and the case was previously being handled by Kasarani DCIO since Waeni’s mutilated body was discovered.
Kevin Kang'ethe extradited to the US to face charges murder charges