HOUSTON -

More than four months after the deadly motel fire in southwest Houston, we’re learning more about how the four HFD firefighters died.

HFD firefighters Robert Bebee, Anne Sullivan, Robert Garner and Matthew Renaud were killed in the deadly blaze on May 31 at the Southwest Inn.

According to the Harris County Institute of Forensic Sciences, the manner of death for all four victims was classified as “undetermined.”

Officials also released the cause of death for each of the fallen firefighters.

Authorities said Robert Bebee died from “smoke inhalation with thermal injuries.”

Investigators said Anne Sullivan died from a “compressional asphyxia,” also known as a chest compression, “blunt head trauma and smoke inhalation.”

Robert Garner’s cause of death was also attributed to a chest compression, according to the Harris County Institute of Forensic Sciences.

Authorities said Matthew Renaud died from smoke inhalation.

No other information has been released at this time.