ARUSHI MURDER CASE: TOUCH DNA MAY BE HELPFUL AND SO ANALYSIS OF EXCLUSION; Assumption of Revelation by Scanning Electron Microscopy & Further Guidance – The Human Rescue Team & Research Repertory

WHAT’S TOUCH DNA???

Its DNA profiling from desquamated body cells from the spot of act.

CAN CONTAMINATION AFFECT THE RESULT ???

AND HOW DO IN RESPECT OF THIS CASE ???

Yes contamination will affect the exclusive diagnosis , but it wont miss any identity. DNAs are very specific and respective to person . In case of contamination more samples from different sites may be required . But in this case most of the identified persons will be family person it self , not because they are culprit , but because incident has occurred in home itself and at any time samples from home will show family persons. It would be normal finding only. But touch DNA wont miss a new person at the incident site. As because this is too late , its difficult to get intact cells and required number. But in even this condition test sd be tried. Hairs may prove wonder . They are good sample for late cases.

AND FINGER PRINTING???

Finger prints are 100 % proved method , surer than DNA profiling , can solve the case alone. But problem with finger printing is , samples should be taken before reconstruction of incident site. This should be first thing to be done actually and should be taken from maximum sites suspected.One of the biggest problem with finger printing is that average people have idea about this and with proper application of GLOVES and DRESSES accused may cheat the investigation.But even then accused may miss some sites to be precaution-ed if some members are not acquainted with scientific concepts of finger printing. So samples should be taken from widest area possible and from multiple sites. Re-entry of the accused or some other person at incident site could be denoted if matched with other evidences.

WHAT SHOULD BE THE NEXT METHOD IF ALL ARE FAILING ???

No test can fail completely . Each test will provide some clue even if corrupted so an integrated method and analysis should be involved. In the cases where incidents occur in home places , suspicion on family persons is natural and in such cases Analysis of Exclusion should be applied. A single proved evidence for the new persons may may lead the case towards solution.

AND WHAT ABOUT NARCO-ANALYSIS ???

Narco- analysis is good for layman testing and analysis would be severely corrupted if accused is habitual with such crimes or has drug addiction or alcohol habits.

OUR SUGGESTION  IN THIS CASE WOULD BE, AN INTEGRATED ANALYSIS SHOULD BE APPLIED AND GAZETTED PERSONS INVOLVED IN CORRUPTION OF SAMPLES SHOULD BE MUST QUESTIONED. Questioning the responsible officers will be perfect lead in the case.

-Further Guidance- Revelation by Scanning Electron Microscopy- A scanning electron microscope (SEM) is a type of electron microscope that images a sample by scanning it with a high-energy beam of electrons in a raster scan pattern. The electrons interact with the atoms that make up the sample producing signals that contain information about the sample’s surface topography, composition, and other properties such as electrical conductivity( An easy introduction from WiKi)

….Why to do SEM ???

SEM is the single best investigation available that reveals the all truth.. just nothing can be escaped if got added with expert analysis. But this modality till yet got little experimented for solving problem of present contexts. Our experiences are evidencing the same. Some of the difficult cases got dealt with the incidental approach of investigation agencies to these pure science laboratories..as is a case came to the Department of Anatomy , AIIMS… investigators were wishing to know for a suspected forgery document that it got signed first or stamped first. SEM evident-fully helps in diagnosing these surface mysteries.

Where in India SEM facility for legal forensics are available???

..This facility is available in Finger Print Investigation … Kolkatta ( Near CNMC Medical College)

in addition its available in EM facility (  Deptt. of Anatomy), AIIMS…JNU..and..

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3 responses to this post.

  1. Posted by Dr Nupur Talwar on February 7, 2011 at 3:50 am

    Dear Dr Ashu Kumar
    I am aarushi’s mother.This is exactly what me and aarushi’s father Dr Rajesh Talwar have been requesting the cbi to do for more than 18 months ,but for some reason they just do not seem to be interested we cannot understand how a prosecuting agency can simply close a case without giving their best shot considering that the touch dna technique is gaining great importance worldwide in solving cases.

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    • Posted by madhu manhtri on June 4, 2011 at 12:44 am

      please do not wait for CBI, please put your own money and do the touch dna on your own money after requesting cbi for doing it ownself.

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  2. we should support strongly for conducting Touch DNA technique, we should create pressure on agencies involved in investigation.

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