A rocket fired from Lebanon wounded two Syrian border police on Monday, Lebanon's General Security agency said in a statement.
"On Monday at dawn, gunmen fired a rocket from Buqaya, in Lebanese territory, towards Syria, hitting a Syrian immigration post and wounding two border police," the statement said.
It is the first time that General Security has reported a shooting from Lebanon into Syrian territory.
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Buqaya is located in the Akkar region, 185 kilometres (115 miles) north of Beirut.
"The Syrians pursued the gunmen and, during the pursuit, a Lebanese General Security post was hit," the statement added.
"A Syrian unit arrived at the Lebanese post and apprehended two members of General Security, taking them into Syrian territory before releasing them."