Complex sentence: Rumors persist to this day that the president's helicopter may have been sabotaged or shot down however, all investigations concluded it had been an accident, with the rotors of the helicopter catching the electricity cables running through Arque canyon.
Split into simpler sentences: Rumors persist to this day that the president's helicopter may have been sabotaged or shot down. However, all investigations concluded it had been an accident, with the rotors of the helicopter catching the electricity cables running through Arque canyon.