A three-alarm fire destroyed the Mormon Church on Brattle Street in just hours Sunday.

The fire started in the attic and swept through the building. Both firefighters and churchgoers said no one was injured in the blaze. Church was in service when the fire alarm went off around 10:30 a.m.

Firefighters were on the scene for over eight hours – with trucks finally pulling out around 7 p.m. – putting out the fire and then making sure it did not reignite.

From the outside, the building appeared to be gutted. The entire roof of the church was gone, numerous windows were broken and smoldering debris could be seen inside the church and on the outside steps. The steeple, however, remained standing, although clearly damaged.

The cause of the fire is not yet known. An investigation is expected to take about a week, but the initial reports were the fire was not suspicious.

The mood was somber, but congregation members were also grateful, expressing their appreciation for the emergency workers’ efforts and their relief that “no one was injured.”