BEIRUT, Jan 21 (Reuters) - Four people were killed in a blast in Beirut's southern suburbs on Tuesday, a security source told Reuters, attributing the blast to a suicide bomber wearing an explosive belt.
The source said another 20 people were wounded in the explosion, which occurred in a stronghold of the military and political movement Hezbollah. (Reporting by Laila Bassam; Writing by Alexander Dziadosz; Editing by Jon Boyle)
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