The explosion that occurred earlier in the day has left at least 24 people dead and 53 injured, the Dawn newspaper reported, citing police.
"Dear Mr. President, dear Mr. Prime Minister, please accept my deepest condolences regarding the tragic consequences of the terrorist act at the railway station in the city of Quetta. We strongly condemn this barbaric crime, among the victims of which were women and children. We hope that those responsible will receive just punishment," Putin said in a telegram published on the Kremlin's website.
Putin added that he would continue to closely cooperate with Pakistani partners in the fight against all forms and manifestations of terrorism.