The National News Agency (NNA) reported that Tuesday’s blast near the remote village of Sbouba in the Baalbek region "was caused by a suicide bomber".
Meantime, security sources told The Daily Star that an explosives-laden vehicle exploded early Tuesday killing its driver and wounding two members from Hezbollah.
The sources said Hezbollah members in a van were attempting to intercept the vehicle when it exploded in Sbouba, where the group maintains a military camp. There was an exchange of gunfire, they said.
The explosives-laden vehicle was likely detonated remotely as their pursuers approached, the sources said. They earlier said the vehicle may have been occupied by a suicide bomber.
TV footage showed at least four vehicles, some in flames, and debris strewn across the road.
In a brief statement, the Lebanese Army said that a Grand Cherokee blew up on the road to Sbouba, northwest of Baalbek, at 2:50am, damaging a number of vehicles. The military has launched a probe.