The Kenyan cult leader is alleged to have encouraged members of his Good News International Church to move to Shakahola forest and prepare for the end of the world. Hundreds would later die.
Other charges relating to child torture and assault are due to be brought at a separate court hearing.
In April 2013, Mackenzie was detained after bodies were found in mass graves in a remote forest about two hours’ drive from the coastal town of Malindi. Most showed signs of starvation, but some – children among them – may have been assaulted according to media reports.
The self-proclaimed pastor denies responsibility for the deaths saying his church had been closed since 2019.
The request by the suspects’ defence lawyer for bail has been referred to another court.