UPDATED: Three Alarm Fire on Pequossette Street Knocked Down

Firefighters are battling a blaze at 37 Pequossette St., near North Beacon Street, after a three-story residential building caught fire there this afternoon around 2 p.m.

Fire crews from Cambridge, Lexington, Newton and surrounding towns are providing aid in battling the three-alarm fire. An engine from Boston was also on the scene. 

Update:

• As of 3:30 p.m. ash and heavy smoke are present in the area. The fire is largely out.
• Firemen had to be taken out of the house because of interior collape
• Firefighters fought most of the fire from outside, and used hoses to protect two neighboring homes.
• N. Beacon St. is open and traffic is flowing, albeit slowly.
• Flames were shooting out of the roof, mostly out of the back of the house around 3 p.m.
• Firefighters at the scene said the house is believed to be a complete loss.

Check back with Watertown Patch for more details.

Stephen Walsh and Franklin Tucker contributed to this report.