Hawzah News Agency - No soldiers were reported wounded or killed in the operation in Arsal, which militants briefly overran in 2014 in a battle that killed dozens and marked one of the most serious spill overs of

the six-year Syrian conflict into Lebanon. 

"An army unit carried out a swift raid at dawn today in Arsal, resulting in the arrest of 10 dangerous terrorists who had previously infiltrated," the army statement said. 

The army says it regularly stages operations targeting ISIS and former al Qaeda-linked militants in the mountainous border region. 

The local militant leader killed in Saturday's raid was involved in attacking military positions and kidnapping soldiers during the fighting in Arsal three years ago, it said. 

A military source said the alleged ISIS leader had also ordered the killing of Lebanese soldiers while the other 10 suspects were arrested on charges of smuggling weapons.