MOSCOW, July 17, /ITAR-TASS/. The Russian Investigation Committee will check all possible versions of the July 15 accident in the Moscow metro, the committee’s spokesperson Vladimir Markin told Itar-Tass.

“Investigators are working with technical documentation linked to the construction of the switch thrower. Material evidence is also being studied. Alongside with a theory of improper installation of the switch thrower, the Investigation Committee is going to check other possible versions of the accident,” Markin said.