Dozens of hard-line Islamists, known as Salafists, demonstrated outside Jordan's royal court on Sunday demanding the release of their detained relatives, dpa reported.
As part of an amnesty on political prisoners, the government last week released 15 Salafists who were detained along with more than 100 others in April in the city of Zarqa, 25 kilometres east of Amman, after clashes with security forces.
In tandem with the demonstrators, more than 85 imprisoned Salafists on Sunday began "an open hunger strike" at their jails to press for their release, their lawyer Musa Abdullat said.
Last week, authorities also pardoned 12 Salafists who had been convicted of plotting acts of terrorism in the past few years by the State Security Court.
Minister of State for Media Affairs Rakan Majali said that the pardoned 12 Salafists formed the first batch of political prisoners whom the government of newly appointed Prime Minister Awn Khasawneh, a former international judge, planned to release shortly.