An explosion inside a maintenance hole on the Texas Tech University campus in Lubbock set off fires and power outages, leading school officials to issue evacuation orders for several buildings and cancel classes for the rest of the week, university police said.

Texas Tech and Lubbock officials have provided a timeline and preliminary details as to what led to the overnight fires and explosions on campus.

A series of fires and a manhole explosion led officials to shut down the campus and send students home early for spring break.