Among the many bodily proof have been blood samples from the deceased, blood samples taken from the accused individuals, blood samples from partitions of the completely different rooms through which the our bodies have been discovered, a hammer, an iron submitting, two spears, soil samples and a controversial pair of gumboots.
The particular targets of the DNA examination carried out have been to; confirm whether or not the samples have been of human origin, decide if the suspected weapons submitted contained any organic materials of the deceased and set up if any of the submitted supplies contained organic materials of any of the accused individuals.
A controversial pair of gumboots dented the credibility of the investigations into the Kiruhura murders and pointed to sheer incompetence and sick motive of the investigators. In the course of the preliminary investigation, one gumboot apparently stained with blood was discovered on the scene of crime.
And subsequent to one of many our bodies there was an imprint of what the investigators thought was that of a gumboot. The investigators tried to hyperlink this gumboot to one of many accused individuals, Fred Nuwagaba, a Rwandese nationwide whose actual title was Deudonne Niyomugaba.
The investigators searched the house of Niyomugaba and located a pair of gumboots. Unusually the investigators picked solely one of many gumboots, the one of many proper foot and even photographed it within the presence of the Niyomugaba.
The 2 gumboots, one picked from the scene of crime and the opposite from the abode of the accused, have been submitted to the Authorities Forensic Lab. A senior analyst, when requested concerning the two gumboots throughout cross-examination, instructed court docket that the 2 gumboots weren’t of the identical make. One was measurement 10 and made by Bata whereas on the opposite the scale quantity and the maker’s label couldn’t be learn.
Different outcomes; a few of the supplies submitted had no blood stains on them whereas some examined optimistic for human blood. DNA profiles have been generated from the samples that had blood stains.
Nevertheless, a few of the supplies had inadequate DNA. The 2 spears had blood stains on it however the blood was from one of many deceased. The spear didn’t have blood from any of the accused individuals. There was, due to this fact, no DNA proof linking any of the accused individuals to the scene of crime. One of many forensic scientists instructed court docket that DNA could also be destroyed when samples are poorly saved.
Evaluation of the soil pattern
A authorities analyst with a grasp’s qualification in Meals Science and Expertise carried out the evaluation from the assorted soil samples that have been recovered in the course of the investigations. The skilled instructed court docket that he additionally had certificates in atomic absorption and forensic spectrometry and these made him competent sufficient to hold out forensic soil evaluation. In accordance with the skilled soils defer of their mineral composition and these variations can be utilized to match and distinction completely different soil samples.
The skilled acquired 4 samples comprising of the controversial pair of gumboots and two soil samples, one from a door and one other from the compound of the primary spouse of the deceased farmer. One of many gumboots didn’t have any soil on it however was discovered to comprise blood and was accordingly despatched to the DNA lab.
The opposite gumboot was that recovered from the house of one of many accused individuals and had soil on it. The analyst instructed court docket that he acquired a soil pattern from the again of the only real of the gumboot and that the pattern was an identical to the soil pattern recovered from the door of one of many rooms of the home through which the murders have been dedicated.
To the analyst the 2 soil samples have been related in mineral composition and to him the similarity was 99.9 per cent. In accordance with the skilled the prospect that soil samples from two completely different areas are related may be very low. Nevertheless, the 2 related soil samples have been completely different from the soil acquired from the compound of the primary spouse.
The scientist, nevertheless, admitted throughout cross-examination that if a suspect walked a substantial distance it will be attainable to search out soil samples of various mineral elements. And additional that on a moist day, the possibilities are excessive that the soil will come from the place of final contact.
It was introduced out in the course of the trial that it had rained closely in the course of the night time of the murders. The analyst additionally confessed that he solely acquired 2.eight grams of soil from the gumboot and that is what he used to hold out the evaluation.
It emerged in the course of the cross-examination that the gumboot had cow dung on it which might have been a supply of contamination.
The analyst admitted that human exercise corresponding to gathering of individuals and autos can have an effect on the sampling of soils and the right process is due to this fact to take soil samples from deep and never from the floor as was the case in these investigations.