NAZRAN — A suicide bomber blew himself up at a police station in Ingushetia on Monday, killing two officers and wounding two others, officials said.
The attacker approached the police headquarters in the town of Karabulak and detonated his explosives, said regional prosecutor Yury Turygin. The bomber's car later also exploded, wounding an investigator.
The attack comes on the heels of a week plagued with suicide bombings in Russia. On March 29, two suicide bombers killed 40 rush-hour commuters and wounded 121 on the Moscow metro in the first terror attack in the Russian capital since 2004. Authorities have blamed militants from the North Caucasus. Dagestan, wedged between Chechnya and the Caspian Sea, was the site of two suicide bombings on Wednesday that killed 12 people, mostly police officers. Another explosion there Thursday killed two suspected militants. And on Sunday, two powerful explosions derailed a cargo train, but no one was injured.
Investigators believe that the attacker had sought to target a bigger group of officers, who were lining up at an internal yard, but set off his explosive belt when the police at the entrance demanded his ID.
About half an hour later, a vehicle that the bomber had parked outside the police headquarters exploded, wounding an investigator of the local prosecutor's office who was part of a group of officials inspecting the area after the first blast.
The explosions damaged the police headquarters and nearby residential buildings and destroyed several cars.
Ingushetia and other Caucasus provinces have been plagued by regular attacks and bombings by Islamic militants who have spread around the region after two separatist wars in neighboring Chechnya.
The violence sweeping the impoverished southern region is increasingly being described as a civil war between Kremlin-supported administrations and Islamic militants. Widespread abuses against civilians by police, including abductions, torture and killings, have helped to swell the ranks of the militants.
One of last week's two suicide bombers has been identified as the 17-year-old widow of a slain Islamic militant from the province of Dagestan.
A Russian newspaper reported Monday that the second Moscow suicide bomber may have been a 28-year-old schoolteacher from Dagestan. Novaya Gazeta quoted the woman's father as saying he recognized her in a photograph.