One woman was killed and five others injured when a bomb exploded on a train station platform in the Caucasus region of Dagestan on Friday, local officials said.
A spokesman for the local transport police said the blast was caused by a bomb planted in a rubbish bin on the platform of a train station in the town of Derbent.
"The blast hit the platform as people boarded a commuter train," the spokesman said, adding that three police and three civilians were wounded by the blast.
One woman later died of her injuries, said a spokeswoman for Derbent hospital.
Russian police are on alert for possible attacks ahead of Sunday's celebrations of the 65th anniversary of the defeat of Nazi Germany in World War Two.
Insurgents from neighbouring Chechnya have in the past launched attacks on Victory Day, a holiday associated with the mass deportation of ethnic Chechens by Soviet leader Josef Stalin during the war.
ReutersLast Mod: 07 Mayıs 2010, 23:46