Bangladesh, July 28 -- An explosion at an industrial park for chemical companies in Germany killed at least two people on Tuesday, with 31 others injured and several still missing hours later. Fire officials who tested the air said there did not appear to be a danger to nearby residents after authorities initially urged people to shelter inside.

The explosion at the waste management facility of the Chempark site in Leverkusen, near Cologne, sent a large black cloud into the air. It took firefighters almost four hours to extinguish the fire that took hold after the explosion.

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Germany's Federal Office for Civil Protection and Disaster Assistance initially classified the incide...