In Russia, at least one policeman was killed and three persons injured as two successive suicide blasts targeted a police station in the Republic of Ingushetia, bordering the restive Chechnya in North Caucasus today. News agency Interfax quoting officials of the Interior Ministry of Ingushetia reported that the blasts occurred in the Ingush town of Karabulak. <br/><br/>The fresh suicide attack took place exactly a week after last Monday's twin attack on Moscow metro stations in which 40 people were killed and about 100 injured.