Homes Destroyed in Massive Fire on Calvin Street Somerville firefighters struck seven alarms and corded off the area. It was the third major fire in that immediate neighborhood in two weeks.

Posted July 25, 2013, 4:11 p.m. By Chris Orchard

About 45 residents were displaced, and eight homes were damaged—with possibly two destroyed—after a violent fire ripped through the structures on Calvin Street Thursday morning. Firefighters struck seven alarms, calling for help from across the region to battle the mammoth blaze.

Here's the most recent post, from Thursday afternoon, with information about the fire.

You can find more updates, including videos of the fire and witness accounts, at the bottom of this article.

At least one firefighter was taken away from the scene on a stretcher, and a total of two were injured. All of the residents got out of their homes without being injured.

The fire damaged 15-29 Calvin St. along with 22 and 24 Bacon Place, according to the American Red Cross of Eastern Massachusetts. By late Thursday morning the Red Cross had set up a reception center for displaced residents at the nearby Argenziano School. The Red Cross did not know how many residents were displaced by the massive fire, but said 17 housing units were affected.

Somerville Fire Chief Kevin Kelleher said fire was showing at four homes when firefighters arrived shortly after 6 a.m. Thursday morning. The responding company immediately struck three alarms, the fire chief said.

As the fire worsened, firefighters struck more alarms, calling for support first from across the city and then from surrounding communities. Fire companies from Winchester, Belmont, Boston, Chelsea, Brookline, Malden and Cambridge were among those who responded to the scene.

According to Kelleher, it took firefighters two hours to finally contain the blaze. He would not speculate on the fire's cause, the number of people displaced or the monetary amount of damage done.

"This was a good fight, yes. This was a large fire," said Kelleher.

Chief Comments on Arson Concern, Investigation Under Way Thursday's blaze was the fourth major fire in the neighborhood in two weeks, the third in the immediate neighborhood. On July 12 firefighters battled two early-morning fires that struck within half an hour of each other, one at 25 Lewis Street, one at 68 Rear Dane St. Both fires were approximately 300 feet—only a few blocks—from Thursday's Calvin Street multi-home blaze. On July 19 firefighters battled another early-morning blaze in the neighborhood, this one at 27 Lake St., about a quarter of a mile away.

A fire at 46 Belmont St., in Spring Hill, also struck during morning of July 19. And a smaller fire damaged a home at 151 College Ave., on the other side of the city, during the morning of July 18.

Asked if Thursday's fire was suspicions, Kelleher said, "I can't comment on that until we do an investigation."

"We've had a couple of fires. I wouldn't call them arson" until after the investigations, he said.

The Somerville Fire Department investigator, Somerville police and the state police fire investigation unit were all investigating the matter, Kelleher said.

More updates

• PHOTOS: Images of Damage from Calvin Street Fire • PHOTOS: Photos of Calvin Street Fire • VIDEO: Mother's Israeli Military Training Kicked In During Fire • UPDATE: City Holds Gathering for Residents Displaced by Fire • VIDEO: Somerville Fire Chief Describes Blaze That Damaged Six Homes • VIDEO: Witness Video Captures Flames Roaring as Firefighters Enter Building • VIDEO: Witness Recounts Seeing Fire, Dozen Fire Trucks Coming to Scene • VIDEO: Firefighters Approach Roof Amid Cloud Of Smoke • PHOTOS: Social Media Captures Somerville Fire Response

Roberto Scalese contributed to this report.