Complex sentence: The FBI reportedly told the victims' families that the results of DNA testing should be available in the latter part of 2010, although the testing of crime scene evidence and interviews of suspects have continued through the fall of 2015.
Split into simpler sentences: The FBI reportedly told the victims' families that the results of some of the DNA testing should be available in the latter part of 2010. Testing of crime scene evidence and interviews of suspects have continued through the fall of 2015.