An explosion caused by a bomb or grenade killed a person in the Dahiyeh suburb of southern Beirut, An-Nahar newspaper reported on Saturday .
Hezbollah immediately imposed a security cordon around the site of the explosion, which the paper said occurred in the tenth floor of a building in the Al-Nasr Complex of the area.
An-Nahar also reported that the security forces were unable to enter the site.
Update : The person that was killed was a Hezbollah member
update 2: Samir Kuntar, a terrorist released by Israel three years ago, was reportedly injured in a blast in one of the buildings.