At least 11 people were killed and 45 others injured by an explosion in the subway system in St. Petersburg on Monday in what Russian authorities say is a terrorist attack.Interfax news agency said police are searching for two persons believed to have been involved in the blast, which coincided with a visit to the country's second-largest city by President Vladimir Putin.One of the two planted an explosive device in a train carriage, while the other put a similar device in a station, it said, without providing other details about the suspects.The explosion occurred near Sennaya Square subwa…READ FULL ARTICLE
