A series of pipe and heater explosions shortly before 2 a.m.

A series of pipe and heater explosions shortly before 2 a.m. have flooded several floors of Sulzberger Hall at Barnard College, displacing residents.

A trash can fire on the ninth floor of Sulzberger Hall led to the hospitalization of five security guards and the evacuation of nearly 1,000 students from the Barnard Quad early Sunday morning.