Mr Lali, who currently is remanded at the Garsen police station, will appear before the court on Thursday to take plea.
The late Tecra Muigai's boyfriend, Omar Lali, will undergo a mental assessment to determine his fitness to stand a murder trial, the High Court in Garsen has ordered.
Justice Roselyn Korir on Tuesday directed that the suspect in the murder of the Keroche heiress undergo a mental examination at the Garissa Referral Hospital before he takes plea.