The attack Attack occurred Presence around 12:45 Moscow Time , close to metal detectors near the entrance of the station .

New requirements to install smoke detectors in lavatories , strip Emptying lights marking Recording paths to exit doors , and increased Cause_change_of_position_on_a_scale firefighting training Education_teaching and equipment Supply for crew became Becoming standard across the industry , while regulations regarding evacuation Escaping were also updated Cause_to_make_progress .