Updated

Lebanon's army says eight soldiers have been killed in clashes with Syrian rebels in and around an eastern Lebanese border town.

The military's statement on Sunday updated an earlier toll from fighting that began the day before and was still ongoing, and which marked one of the most serious spillovers of the three-year-old Syrian conflict into the tiny neighboring country.

The clashes in and around Arsal began when fighters raided the border town after a militant from Syria's al-Qaida-linked Nusra Front was detained while being transferred to a Lebanese hospital.

Tens of thousands of Syrian refugees live in and around Arsal and fighters sometimes use the town as a base. But this weekend's fighting is the most serious yet.