Early Sunday in Volgograd, Russia a suicide bomber killed at least 15 people at the city's main rail station. Above you can watch footage of the explosion from a security camera perched across the street. The video is inherently disturbing but not gory.

No group or persons have yet to claim responsibility for the attack. According to the New York Times, the explosion is believed to have happened outside security checkpoints.

As the footage makes clear, the death toll is expected to rise.