Breitbart News has learned that several types of construction safety gear were used to build and operate a large fire at the site of the massive Texas City Building Explosion.

The Texas Firearm Safety Institute (TFSI) is investigating the incident, which occurred on October 22, 2015, and resulted in the death of three firefighters.

TFSI is a state-wide, multi-agency agency comprised of the Texas Department of Public Safety (DPS), the Texas Office of Fire Prevention and Control (OFPC), the Federal Bureau of Investigation (FBI), and the U.S. Department of Energy (DOE).

The Department of Homeland Security (DHS) and the Texas Parks and Wildlife Department are also investigating the fire.

The incident happened in a heavily wooded area just south of Interstate 35 and east of Interstate 45, which is a popular tourist destination.

A Texas City Fire Department employee told TFSI that he was working on the site when he heard a loud bang that quickly turned into a fire.

TFSAI’s Director of Facilities Safety, Richard O. Gentry, said the fire was “a total accident” and the fire itself was an “isolated incident.”

Gentry said the equipment used was used in a firefighting program for a contractor that was in the process of constructing a high-rise building, which he described as “a highly combustible material.”

TFSI investigators also believe the fire began when a contractor installed a fire extinguisher to contain the blaze.

The contractor, Gentry noted, was not licensed by DPS to work on the building site.

The DPS said that the contractor had been working on a project at the time the fire started.

The building was not damaged, nor were any residents injured.

According to TFSAIS, the fire, which began around 9:30 p.m. local time, was brought under control after firefighters arrived at the scene.

“As soon as the fire alarm went off, the safety of our employees and the public was immediately and completely put into jeopardy,” Gentry told TFSAIs press release.

“Fortunately, all three of the firefighters were able to safely escape the building.

As the fire quickly spread, it caused considerable damage to the building.”

TFSAII, which also serves as a liaison for DPS and Texas Parks, will be conducting a formal investigation into the incident.

TFSSI is one of the most-accredited building safety training facilities in the country, according to the company’s website.

The company has been accredited to provide training to fire departments across the state since 2008.

“TFSAI is a nationally recognized and highly respected fire safety training provider for the Texas Fire Marshal, Texas Department, and the state of Texas,” TFSAIC said in a statement.

“We look forward to learning more about this incident and providing our assistance as soon as possible.”

TFSSIs director, Richard Gentry added, “We want to thank the fire department, the DPS, and OFPC for their assistance in the investigation and bringing the fire under control.”

In addition to the three fatalities, TFSSIS said that three other firefighters suffered injuries.

TFSLD said that none of the injuries were life-threatening.

According a statement by TFSAICS, of the 3 fatalities, one person was injured, while one firefighter sustained non-life-threatening injuries.

“Fire safety training is an integral part of our firefighting programs and TFSA Ives fire safety program provides training to state and local fire departments,” Gens said.

“With the fire investigation underway, it is our intent to release a statement shortly.”

TFSIA is an accredited and highly-respected fire safety provider for Texas Fire Marshals, Texas Parks Department, Department of State Health Services, and Texas Department for Health and Human Services.

The organization’s fire safety programs are provided to all state and municipal fire departments in Texas.

The TFSA Institute is a partnership between TFSA and Texas Fire Services.