Kuwaiti authorities say they have identified a cell of Islamic State militants from the small Gulf nation involved in fighting in Iraq and Syria, the New York Times reports.

The Ministry of Interior said on Thursday, July 30, that it identified five Kuwaitis involved in the cell, including one named Mubarak Malfi who was killed while fighting in Iraq.

It says the other members of the cell are now in custody and have confessed to being indoctrinated by the group and receiving weapons' training before taking part in fighting abroad. The suspects identified were born between 1982 and 1990, according to the NYT.

Authorities say the detainees will be prosecuted.

Kuwait has tightened security in the wake of a bombing claimed by the IS group that killed 27 worshippers at a Shiite mosque in late June.