Dagestan and the rest of the Caucasus republics of Russia have been the site of a long-running Islamic insurgency against Moscow and its local allies. A bombing and separate shooting killed six today.
A suicide bomber killed 17 people at a market in Russia's North Ossetia on Thursday, the latest evidence of a resurgent Islamist insurgency in the area.
A Dagestan suicide bombing that struck a Russian military base Sunday underscored the difficulties Moscow faces in stamping out violence in the restive republic.
A week of regional violence climaxed Monday in Ingushetia when a suicide bomber blew a hole in a heavily fortified police headquarters, killing at least 20.