Black smoke rises from oil containers as firefighters try to extinguish a fire that broke out at the Nasr Petroleum Company refinery in the Egyptian canal city of Suez April 17. Five people were killed and dozens injured while the cause of the blaze, which set off an explosion, was not immediately known, an official said.

Soldiers stand guard as black smoke rises from oil containers as firefighters try to extinguish a fire that broke out at the Nasr Petroleum Company refinery in the Egyptian canal city of Suez on April 17. Five people were killed and dozens injured while the cause of the blaze, which set off an explosion, was not immediately known, an official said.