Five Jordanians were sentenced to death by a State Security Court on charges of having ties with the Islamic State and planning terrorist acts in the kingdom, state media reported.
The Jordanian court also handed terms ranging from three to 15 years imprisonment with hard labour to another 16 people in the case.
The court charged the 21 members of the dismantled cell with carrying out terrorist acts, manufacturing and possessing explosive substances, and spreading terrorist ideologies.
The convicted persons were arrested in March during a military operation in the northern Jordanian town of Irbid, which is near the border with Syria, the News Agency of Nigeria (NAN) reports.
Jordan has been hit by several terrorist attacks this year.