Charles Muchuha, 28, (left) an Uber driver from Kiambu whose body was recovered on January 23 along the Kabarnet-Iten road and Daniel Kinuthia, 34, a mason from Ruiru, Kiambu County, whose body was recovered alongside that of Mr Muchuha.
One of the slain men was picked up on January 18 by people who identified themselves as security officers.
Families say the men were law-abiding citizens as they call for speedy investigations into the murders.
Mystery surrounds the deaths of two friends who were taken from their Kiambu County homes, strangled and their naked bodies dumped more than 350 kilometres away in Elgeyo Marakwet, after their families said one was picked up by people who identified themselves as police officers.
The bodies of Charles Muchuha, a 28-year-old taxi driver from Kiamaiko village, and Daniel Kinuthia, 34, a mason from Murera village in Ruiru, were found on the Kabarnet-Iten road on January 25, one week after they went missing.