The Army Intelligence arrested on Wednesday more than 20 individuals in raids on encampments and residents of Syrian refugees in the eastern city of Baalbek, the state-run National News Agency said.
The army raided encampments and residences of Syrian refugees in the towns of Hosh al-Arab and Hosh Sneid and confiscated several motorbikes, NNA added.
The detainees of Hosh al-Arab had no identity cards in their possession and have illegally entered the country, it said.
The army also raided Syrian encampments in Hosh al-Nabi and confiscated the load of two trucks that contained motorcycles, and three other trucks used to transport Syrian workers.
Lebanon hosts around 1.5 million Syrians fleeing their country's four-year war.
Fears that militant extremists could use the encampments as a safe haven and conduit to carry out terrorist acts in Lebanon triggered intensified security measures.
Editor's note: This article has been edited from the source material