NATICK (CBS) – Natick firefighters say they struggled to put out a three-alarm fire Thursday because the house was filled with so much junk.

Natcik-Fire-333

Firefighters tackled a three-alarm blaze at a Natick home early Thursday morning. (WBZ-TV)

READ MORE: Gov. Charlie Baker Weighing $4B Spending Bill Sent To Him By Lawmakers

Flames broke out in the basement of a home on Speen Street about 1 a.m.

Two people inside escaped unharmed.

Firefighters tackled a three-alarm fire at a Natick home early Thursday morning. (Photo by Natick police)

Firefighters tackled a three-alarm fire at a Natick home early Thursday morning. (WBZ-TV)

READ MORE: Wind Gusts Across Eastern Mass. Projected To Be 50 MPH Or Higher On Monday Night

Firefighters said they had problems putting out hot spots because there was so much hoarding inside the home, according to Natick Fire chief Rick White.

He said they couldn’t move around and could have been trapped because of all the junk.

Items on the first floor were stacked halfway up the windows, as well as in the basement and second floor, said the chief.

A Framingham firefighter hurt his knee and was taken to Metrowest Medical Center.

MORE NEWS: Body Of Missing UNH Student Vincenzo Lirosi Found

There’s no word yet on how the fire started.