Death toll from attacks in Russia's Volgograd rises to 34 December 31, 2013 -- Updated 0827 GMT (1627 HKT) (CNN) -- The combined death toll from the two suspected suicide bombings in the Russian city of Volgograd has risen to 34 after some of those wounded in the attacks died, the state-run news agency RIA Novosti reported Tuesday. The number of people killed in an explosion at the city's main rail station Sunday now stands at 18, the agency said, citing the Emergencies Ministry. For the blast on a trolleybus Monday, the toll has reached 16, it said, attributing the information to health officials.