Moscow Explosion

A woman with blood on her face stands outside a metro station in Moscow in this frame from TV, Friday, Feb. 6, 2004. An explosion hit the Moscow metro during Friday morning rush hour, killing at least 22 people and wounding 30. It sent clouds of smoke through the tunnel, the Emergency Situations Ministry said.

Rescue workers stand outside a metro station in Moscow in this frame from TV , Friday, Feb. 6, 2004.

Rescue workers stand outside a metro station in Moscow in this frame from TV, Friday, Feb. 6, 2004.

A wounded passenger, rescued from Moscow's subway, stands outside the Paveletskaya subway station Friday, Feb. 6, 2004.

In this image taken from TV, rescue workers carry a stretcher with a wounded passenger from the Moscow metro outside Avtozavodskaya station Friday, Feb. 6, 2004.

Rescue workers carry the injured out on stretchers after an explosion at Paveletskaya metro station in Moscow, Russia, Friday, Feb. 6, 2004.

Rescue workers and officials stand on a platform after an explosion in a tunnel at Paveletskaya metro station, Moscow, Russia, Friday, Feb. 6, 2004.

Emergency Situations Ministry rescuers rush to the Paveletskaya metro station Friday, Feb. 6, 2004.

Two injured women outside Avtozavodskaya metro station Friday, Feb. 6, 2004, after surviving at the scene of an explosion on the Moscow metro during Friday morning rush hour.

In this image taken from TV, rescue workers carry a stretcher with a wounded passenger from the Moscow metro outside Avtozavodskaya station Friday, Feb. 6, 2004.

People react as they stand outside Avtozavodskaya metro station in Moscow Friday, Feb. 6, 2004.

Emergency Situations Ministry rescue workers carry a wounded passenger with heavy burns outside Paveletskaya metro station Friday, Feb. 6, 2004.

Interior of metro train after explosion in tunnel near Paveletskaya station, Moscow, Russia, Friday, Feb. 6, 2004.

An investigator walks through a burnt-out wagon full of dead bodies of passengers in a metro tunnel near Avtozavodskaya station Friday, Feb. 6, 2004.

Ministry of Emergency Situations rescue workers carry oxygen containers outside Avtozavodskaya metro station in Moscow Friday, Feb. 6, 2004.