Hundreds of Syrians continued to flee violence in their country and crossed into northern Lebanon on Monday.
At least 1,000 people arrived in the Wadi Khaled area overnight, the AFP news agency reported.
Lebanese officials said between 4,000 and 5,000 mainly Sunni Muslim Syrians have crossed their frontier to escape the unrest.
On Saturday, the military moved into the border town of Tel Kelakh to quell protests against President Bashar al-Assad’s rule.
Twelve civilians are reported to have been killed by shelling and sniper fire since then.
Residents described Tel Kelakh as a “ghost town” with phone lines down, businesses closed and both water and electricity supplies cut.
Human rights activists have said the two-month long government-led crackdown on pro-democracy protests has left more than 700 civilians dead.
Reports from Syria are difficult to independently verify as foreign journalists are banned from the country.