Texas Tech University sent students on an early spring break after spurts of green flames shot out from manholes on campus on Wednesday night. The source was an explosion at a substation that caused widespread outages across campus and the university's Health Sciences Center.

The explosion came from a manhole on campus near a substation, causing power outages in the area and at the Texas Tech Health Sciences Center, officials said.

Texas Tech and Lubbock Fire Rescue officials were confirming an ongoing evacuation near the campus' engineering key as well as outages across the Tech and Texas Tech Health Sciences Center campuses following several fires and a power substation explosion Wednesday evening.