- 18,295 viewsDuration: 3:58Director of Criminal Investigations Mohamed Amin and DCP leader Rigathi Gachagua have clashed over investigations into the murder of researcher Dr. Victoria Mutiso. Amin alleges that Gachagua was in contact with two suspects later arrested over the killing, including a boda boda rider accused of ferrying the gunman to the crime scene. Amin says the alleged communication forms part of the evidence being investigated.