Georgia Gwinnett College Explosion Building Closed Until Sunday

LAWRENCEVILLE, GA -- The building where an explosion rocked Georgia Gwinnett College on Monday will remain closed for the rest of the week, the school announced Tuesday.

In a post on Twitter, GGC said Building A will remain closed through midnight on Sunday, March 27.

On Tuesday, many of the classes usually held in the building were taking place at alternate locations across the Lawrenceville campus.

Monday morning, an explosion that went off after firefighters responded to a fire alarm seriously injured a campus food-contract worker in a women's room of the building.

No students were injured in the blast.

Investigators on the scene throughout the day included the FBI and ATF, but in an afternoon statement, GGC President Stas Preczewski said no evidence of an explosive device was found and that investigators believed a build-up of gases in a sewer line may have been to blame.

Early Tuesday, some students, faculty and staff may have briefly experienced a bit of a scare.

At about 9:10 a.m., an electrical outlet shorted in Building B -- where some classes from Building A had been moved -- triggering an alarm.

The building was evacuated, but cleared by Gwinnett County Fire officials for re-entry by 9:30 a.m.