A suspected bomb blast inside a car of the St. Petersburg Metro system has resulted in casualties among passengers. The entire transit system is shut down as bomb squads and rescuers respond to the emergency. The explosion happened as the train was travelling between the stations Tekhnologichesky Institut and Sennaya Ploshchad of the St. Petersburg Metro, the National Antiterrorism Committee confirmed. Images posted on social media show bodies lying next to the damaged car, with blood apparently spilt on a bench. В метро Санкт-Петербурга произошел взрыв, есть пострадавшие https://t.co/fTmg6R42oN pic.twitter.com/OX80VXcqFk — сторожевая башня (@cnn_russian) April 3, 2017 The St. Petersburg governor’s office said there were as many as 50 victims in the incident, including 10 fatalities. Two of…