Twenty-five-year-old Jeff Fiala was killed while fighting an apartment fire on Young Street in the McCully area on Jan. 6. Five other firefighters and one occupant were hospitalized.

ATF agents based in Honolulu have already started the investigation, but a few dozen more are on the way from various states.

HFD officials worked alongside the Bureau of Alcohol Tabacco Explosives National Response Team to complete the on-scene origin and cause fire investigation.

Honolulu's fire chief said firefighter Jeffrey Fiala, who was trapped by a roof collapse, had been with the department for less than two years.

A Honolulu Fire Department Fire Investigator has been requested for an early morning vehicle fire in Makakilo.

The only thing more reliable in Hawaii than the annual explosions lighting up the New Year’s Eve sky has been the failure of politicians and law enforcement to address the issue in any meaningful way.

"We're going to do everything we can, we're going to investigate everything we can to make sure the Honolulu Fire Department and the people of Honolulu have answers as to what happened, why a firefighter was lost.

Samantha Chun, left, and Joseph Fujioka. The search for two missing teens off Oahu’s North Shore continued today without success. Honolulu Ocean Safety said this evening it will resume the search with its partners on Tuesday. The surf is expected to be smaller than in previous days.

Honolulu Ocean Safety, along with the Honolulu Fire Department and the U.S. Coast Guard. continued searching for two missing teens today on Oahu’s North Shore on Ke Iki Beach near Sharks Cove, according to the Honolulu Emergency Services Department.

Multiple Honolulu City and County Officials react to the firefighter that died in the line of duty after responding to an apartment fire in McCully on Monday night, January 6,

GEORGE F. LEE / GLEE @STARADVERTISER.COM Firefighters battled the blaze Monday night at the property. 1 /5 GEORGE F. LEE / GLEE @STARADVERTISER.COM Firefighters battled the blaze Monday night at the property.

The Honolulu Fire Department will begin an investigation into not only what caused the fire, but the circumstances that led up to the death of firefighter Jeffrey Fiala.