It is one of the sections under the Forensic Directorate. It offers reliable crime scene investigation services using scientific know-how to other forensic units and general investigators. The CSI Unit is the most decentralized Forensic unit. Its central Administrative and management functions are at DCI Headquarters. Other Stations are based at the county and sub county levels  across the country.

Functions 

      i.        Attend to all reported crime scenes and incidences

    ii.        Conduct crime scene processing and examination 

a.    Crime scene search-recognition and detection of trace evidence. 

b.    Crime scene documentation 

c.    Crime scene photography 

d.    Crime scene sketching 

e.    Crime scene videography 

f.     Note taking 

g.    Exhibits/ evidence recovery, packaging and labeling 

h.    Latent fingerprints search, development and recovery. 

   iii.        Conduct numbers verification and restoration-in vehicles, guns, etc 

   iv.        Assist in identification of human bodies and remains in minor and major cases. 

    v.        Documentation of Forensic procedures like- e.g. Post mortem exercises and Exhumation procedures. 

   vi.        Advice and assist investigators in matters relating to scene preservation and exhibit handling 

  vii.        Preliminary examinations of trace evidence 

viii.        Shoe marks analysis 

   ix.        Tyre marks analysis 

    x.        Crime scene patterns analysis (blood patter pattern, burn pattern, shooting marks pattern, glass fracture pattern, etc) 

   xi.        Crime scene reconstruction 

  xii.        Analysis of modes of operation by criminals 

xiii.        Training on crime scene investigation and management to the units personnel and at police training colleges 

xiv.        Giving evidence and expert opinion in courts 

  xv.        Research on new techniques and methodologies applicable to crime scene investigations duties.