The Lebanese army announced on Tuesday that it had arrested members of an ISIS cell in the northern city of Tripoli.
It said the terrorist cell was plotting to carry out attacks in the country.
In a statement, it added that the members had purchased weapons with the aim of carrying out attacks, taking advantage of the dire situation in Lebanon.
The cell had also sought to recruit more members.
It had started operating in June and had assassinated retired officer Ahmed Murad in the Tripoli on August 22.
Investigations are underway with the detainees.