Gethenji was arrested and arraigned for allegedly assaulting a security guard in Kitisuru last week. He is also facing a civil suit over the control of Kihingo Village owned by the family.
He was arrested and released on bail and instructed to appear before the DCI to submit his firearm for ballistic examination.
Speaking to local media, Gigiri Police boss Julius Kiragu said the former lawmaker’s gun will be presented in court as an exhibit.
“We have decided to charge him with assault and causing bodily harm,” Kiragu said.
According to Mr Kiragu, Gethenji was captured on camera assaulting the guard on Friday at around 11 pm after he asked him (Gethenji) to lower the window of his car for inspection.
It is then that two men jumped out of the car. They were seen kicking the guard.
The victim has since received treatment at a health facility and has been discharged.