Nigeria's military secretly buried more than 300 Shia Muslims in a mass grave, according to officials, prompting Amnesty International to call for an investigation.
Officials in the state of Kaduna told an inquiry that soldiers took bodies from a morgue to a bush site following a crackdown on a pro-Iranian sect, the BBC reports.
The raid in December followed accusations the sect had tried to assassinate the army chief, which it denies.
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