One hour later, unidentified gunmen fired at a convoy headed by Daghestan's interior minister, Adilgirey Magomedtagirov, as it drove to the scene of the blast.
Two bodyguards were killed and a third injured in that attack.
(AFP, Interfax, ITAR-TASS)
MORE: Read coverage of this incident in Russian from RFE/RL's Russian Service.
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