A man detained in Bahrain last month as the island kingdom came under missile attack from Iran vanished for days, until his family was called to retrieve his body from a military hospital.

Relatives said Mohamed al-Mousawi, a Shia Muslim who had previously been imprisoned, was saving money to start a business. His body was returned covered in slash marks and bruising, including on the soles of his feet. His death has become a flashpoint in the Sunni-ruled, Shia-majority country on the war’s front lines, where critics say authorities have revived tactics used to suppress Arab Spring protests in 2011.

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Bahrain, a monarchy that hosts the U.S. Navy’s 5th Fleet, has arrested dozens of people throughout the war for filming strikes and demonstrations, expressing support for Iran, and on suspicion of spying for it. “They want to make sure nobody challenges the state’s narrative and silence any voices not telling the story [of the war] how they want it to be told,” said Sayed Ahmed AlWadaei of the London-based Bahrain Institute for Rights and Democracy.

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