EL PASO, Texas (KTSM) Five people were injured after an explosion at the Sun Metro Transit Operations Center on Tuesday, Feb. 11 in East El Paso, El Paso Fire Department Deputy Chief Robert Arvizu said.

Arvizu said the explosion happened just after 1 p.m. at an indoor maintenance area at the Sun Metro Operations Center at 10151 Montana Ave.

A total of five people were injured. However, four people were transported to a local hospital. Three people suffered minor injuries and one person suffered serious injuries, fire officials said. One person refused transport.

Arvizu said the fire is now under control and crews are working to put out hotspots at the center. The roof and walls of the maintenance area collapsed, Arvizu said.

Over 100 firefighters and 48 units responded to the fire. The cause of the fire is currently being investigated by the Fire Department.

El Paso Police also responded to assist with the fire.

A spokesperson with the Fire Department initially said a vehicle exploded possibly inside the operations center.

Police say Montana Avenue is closed between Wedgewood and Yarbrough in both directions.

The City of El Paso sent out this statement about the fire:

“The City of El Paso Fire Department is actively responding to a structural fire at the Sun Metro Transit Operations Center, 10151 Montana. At this time, details about the fire and its cause are limited. Our primary focus is on containing the fire and the safety of our staff.

“We want to extend our sincere gratitude to our first responders for their swift action in addressing the situation.

“Currently, Sun Metro routes are all operational, however, riders may experience some delays as the day progresses. We appreciate the public’s patience and will provide updates as more information becomes available.

“El Paso International Airport operations are unaffected.”

“We’re currently working on gathering more information on this incident.”

This is a developing story and we will update it as soon as we learn more.