** FILE ** Investigators work at the site of an explosion near a cafe in the town of Khasavyurt, Dagestan, southern Russia, on Saturday, Jan. 15, 2011. An explosive-laden car exploded near the White Nights cafe in the town of Khasavyurt in Dagestan, killing and wounding several persons. The town borders Chechnya, where two conflicts with the federal government in Moscow fueled the rise of Islamic militancy in the Northern Caucasus region. (AP Photo/Ruslan Alibekov, NewsTeam)

Photo by: Ruslan Alibekov

** FILE ** Investigators work at the site of an explosion near a cafe in the town of Khasavyurt, Dagestan, southern Russia, on Saturday, Jan. 15, 2011. An explosive-laden car exploded near the White Nights cafe in the town of Khasavyurt in Dagestan, killing and wounding several persons. The town borders Chechnya, where two conflicts with the federal government in Moscow fueled the rise of Islamic militancy in the Northern Caucasus region. (AP Photo/Ruslan Alibekov, NewsTeam)