Terrorist attack in Volgograd committed out of revenge - expert

The U.S. have expresses condolences to the families of those killed and injured in the terrorist attack that took place in Volgograd on October 21^st. U.S. Ambassador to Russia Michael McFaul posted words of support on Twitter.

An explosion occurred in a passenger bus today in Russia's Volgograd today, killing at least six passengers; about 28 were injured. According to most recent reports, the terrorist act was conducted by a suicide bomber.

Officials with the Investigative Committee of Russia said that the explosion, according to preliminary data, was conducted by a suicide bomber, a native of Dagestan, a 30-year-old Naida Akhiyalova.

It was reported that the woman got on the bus at a stop, and the explosion took place almost immediately afterwards.

The suspect was the wife of a terrorist leader in the Northern Caucasus.

Mourning days have been announced in Russia on October 21-23.

"The people, whose relatives were killed in the course of numerous wars and conflicts with illegal armed formations, remain captives of medieval vendetta. We can see manifestations of that from time to time. Women, who lost their husbands, brothers, sometimes children, they take revenge. They do not care who will be their victims - they only need to kill those representing the ethnic nationality that, as they believe, was the factor that deprived them of their loved ones. I do not see any other motives of this crime. We can remember that from the hostage crisis in the Moscow music theater, when there were many female suicide bombers from this category of criminals," Doctor of Historical Sciences, MGIMO professor, retired KGB lieutenant-general Nikolai Leonov told Pravda.Ru.