Emergency rule gives state security sweeping powers of detention
Twenty-two alleged members of an unknown Islamist group, the Victorious Sect, were accused of planning attacks on tourism sites and gas pipelines.
Human Rights Watch says its research suggests the security forces may have fabricated the group's name. It reports claims the case was used to justify renewing emergency laws.
Although the state prosecutor dismissed the charges against the suspects, 10 of them are still believed to be in detention.