Complex sentence: The tail of the aircraft and a few human remains were found on 10 April 1961 on La Gotera Hill in the Lastima-Pejerreymin Range; all on board had been assumed killed.
Split into simpler sentences: The tail of the aircraft and a few human remains were found on 10 April 1961. Some official accounts indicate the wreckage was located on La Gotera Hill in the Lastima-Pejerreymin Range; all on board had been assumed killed.