File Photo: Lebanese Army vehicles patrol the area of Marjayoun in southern Lebanon near the border with Israel. AFP
Despite a November 27 ceasefire that sought to halt more than a year of hostilities between Israel and Hezbollah, including two months of all-out Israeli war on Lebanon, rockets were fired at Israel on March 22 and 28.
No group admitted being behind the attacks, and the Iran-backed Lebanese Hezbollah group denied any involvement.
However, Hamas had claimed to have fired rockets at Israel from Lebanon several times before the ceasefire.
In a statement, the Lebanese army said it had identified "the group responsible" and that it was "composed of Lebanese and Palestinians".
It said it had arrested "several members of the group" while "the search continues to arrest other individuals involved".
The security official, speaking on condition of anonymity, said: "Lebanese army intelligence services have arrested three members of Hamas."
Two of those detained were Palestinian and one was Lebanese, the official said, adding that they were arrested in Beirut and south Lebanon on Tuesday and Wednesday.
They are "suspected of being involved in firing rockets at Israel", the official added.
Lebanese President Joseph Aoun had previously said of the attacks that "Hezbollah is not responsible".
Israel has bombarded Hezbollah's bastion in the southern suburbs of Beirut on March 28 for the first time since the November ceasefire began.
On Wednesday, the health ministry in Beirut said Israeli strikes killed two people in the south.
Hezbollah began firing across the border at Israel in October 2023 in solidarity with the Palestinians under genocidal war in Gaza.
Last September, the conflict erupted into open warfare, with Israel assassinating Hezbollah's then-leadership and killing more than 4,000 people.
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