Complex sentence: The police claimed his death was the result of an extended hunger strike, but he was found to have massive injuries to the head, which many saw as strong evidence that he had been brutally clubbed by his captors.
Split into simpler sentences: The police claimed his death was the result of an extended hunger strike. He was found to have massive injuries to the head, which many saw as strong evidence that he had been brutally clubbed by his captors.