Fitchburg 2nd Alm 176 Walton St

First arriving crews stretch a hose into 176-178 Walton St as fire vents from the rear of the building.

Fitchburg Fire Chief Kevin Roy directs first in crews at a 2nd Alm fire at 176-178 Walton St as fire vents from the back of the building.

Fitchburg Fire Chief Kevin Roy checks on first in crews at a 2nd Alm fire at 176 Walton St as heavy fire vents from the back of the building.

Heavy fire vents from the left side of 176 Walton St during a 2nd Alm fire. 2 persons were rescued from inside the building, however 1 of them died along with one other who was recovered from the building.

Fitchburg Firefighters throw ground ladders to the 2nd floor while other crews were inside searching for 2 persons reported trapped during the initial stages of a 2nd Alm fire at 176 Walton St. From left-right Lt Marty Kukkula, FF Kurvin Lopez, Lt Anthony Castelli, FF Patrick Haverty and Deputy Chief Dave Gravel.

Fitchburg Firefighters throw ground ladders to the 2nd floor while other crews were inside searching for 2 persons reported trapped during the initial stages of a fatal 2nd Alm fire at 176 Walton St. From left-right FF Kurvin Lopez, Lt Marty Kukkula, Deputy Chief Dave Gravel and FF Patrick Haverty.

Emergency personnel remove a victim found inside the 2nd floor at 176 Walton St. during a 2nd Alm fire. The victim died along with one other, a 3rd occupant rescued was seriously injured.

Emergency personnel wheel off a victim found on the 2nd floor at 176 Walton St. during a 2nd Alm fire. The victim along with one other died, and 1 other person was injured.

Fitchburg Lt Jack Gilmartin exits the building after finding and removing a trapped occupant during a 2nd Alm fire at 176 Walton St.

Fitchburg Lt Jack Gilmartin (left) and FF PJ Roy outside the building after finding and removing a trapped occupant during a 2nd Alm fire at 176 Walton St.

Fitchburg Lt Jack Gilmartin confers with Chief Kevin Roy after finding and removing a trapped occupant during a 2nd Alm fire at 176 Walton St. Chief Roy and Fitchburg PD officers removed one other occupant but 1 other sibling did not make it out.

Fitchburg FFs vent the roof at a 2nd Alm fire at 176 Walton St. 1 occupant did not make it out, 1 was rescued but did not survive and a 3rd was rescued suffering serious injuries.

Fitchburg FFs vent the roof at a 2nd Alm fire at 176 Walton St.

Fitchburg Firefighters Shane Thomas (left) and Patrick Haverty open the roof during a 2nd Alm fire at 176 Walton St.

FF Matt Glenny (left) gets his air bottle changed by Safety Officer Lt Richard Liberatore with an assist on lighting by Fitchburg PD Ptl Mike Faucher at a 2nd Alm fire at 176 Walton St.

FF Matt Glenny (right) gets his air bottle changed by Safety Officer Lt Richard Liberatore at a 2nd Alm fire at 176 Walton St.

FF Patrick Haverty (left) confers with Capt Anthony Marrama at a double fatal 2nd Alm at 176-178 Walton St.

Lt Anthony Castelli at the 2nd Alm on Walton St.

Crews finish off some hot spots during a 2nd Alm at 176 Walton St Fitchburg.

An exhausted FF Tim O'kane takes a breather after assisting in locating a victim of the 2nd Alm fire on Walton St.