NORTH WALPOLE -- Firefighters are battling a blaze at a house on Pearl Street.

First responders were alerted to the fire around 3:20 p.m. Friday, according to Southwestern N.H. Fire District Mutual Aid. As of 4:20 p.m., heavy smoke billowed from the house as first responders from several local departments doused it with water.

Extensive damage was visible from the scene.

This is a developing story. More information will be added to this report as it becomes available.