Lab explosion, fire kill 3 university students

An explosion in a lab at Beijing Jiaotong University killed three students on Wednesday morning, according to the capital's fire department.

The blast, which occurred about 9:30 am, sparked a fire that blackened the air and burst from the window of the environmental engineering lab where students were conducting a scientific experiment on landfill sewage treatment.

Beijing fire department sent eight squadrons and 30 fire engines to the scene.