"Naturally, I cannot name the details of these measures, but I can assure you that all possible measures to ensure security of city residents are being taken and will be reinforced," the governor told journalists.
"First of all, I would like to say that we were shocked by this horrible act of terrorism. I express my sincere condolences to all Muscovites and to the families of the victims," she said.
According to Ms Matvienko, the city authorities recently held an exercise to train ensuring security in case of emergencies, including in the subway. They held a meeting afterwards to analyze the results of the exercise and issue corresponding orders.
Ms Matviyenko also asked St.Petersburg citizens to be vigilant and to report to thelaw-enforcement bodies about all derelict boxes, parcels and other things and about any suspicious facts.
"We will do our best to make the life in the city quiet and stable," the governor emphasized.