The oldest whodunnit in the world

Evidence exists of a link between the hominid group Paranthropus and stone tool manufacture between around 2.5 and 1.5 million years ago. There is data showing that Paranthropus aethiopicus/boisei existed in Ethiopia's Omo region during the same approximate time period. These relate to new evidence from Gona in Ethiopia, which reveals that the onset of tool manufacture dates back to 2.5 million years ago and a recent report that stone tools were discovered in 'close association' with a jawbone from an early example of the Homo species at a nearby 2.3 million-year-old site in Hadar.