BEIRUT (Reuters) - A loud explosion was heard in Beirut's southern suburbs on Tuesday, a stronghold for the Lebanese pro-Syrian Shi'ite Hezbollah militant group, residents said.
There were no immediate details on what caused the explosion but tensions have been high following the intervention of Hezbollah fighters in the war in neighboring Syria against Sunni Muslim rebels trying to topple President Bashar al-Assad.
(Reporting by Laila Bassam)
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