“Two suicide bombers including one impersonating a police officer killed 12 people in southern Russia on Wednesday, two days after deadly suicide bombings blamed on the region’s militants tore through the Moscow subway system.

Prime Minister Vladimir Putin said Wednesday’s blasts in the province of Dagestan – which involved one bomber impersonating a police officer – may have been organized by the same militants who attacked the Moscow subway.

‘I don’t rule out that this is one and the same gang,’ Putin was quoted by Russian news agencies as saying at Cabinet meeting. The powerful former president previously vowed to ‘drag out of the sewer’ the terrorists who carried out the Moscow attacks, which killed 39 and injured scores more.

Bombings and other attacks occur almost daily in Dagestan, Chechnya and Ingushetia, provinces in Russia’s North Caucasus region where government forces are struggling against a separatist Islamist insurgency.

“A suicide bomber struck an upmarket district of the Afghan capital Kabul on Tuesday near a hotel and guest house frequented by foreigners, killing eight people and wounding another 40, officials said.

It was the latest in a string of attacks in Kabul blamed mostly on Taliban militants and coincided with a conference on corruption being hosted by Afghan President Hamid Karzai.