HERKIMER — A total of 21 people have lost their homes after a fire in a three-story apartment building in Herkimer County late Wednesday night, according to Herkimer fire officials.

The alarm was raised at 11:19 p.m. Wednesday for the Seld Building at 236 N. Main St. in Herkimer. Volunteers from seven local fire departments responded to the scene, attacking the fire from multiple directions. The Ilion aerial truck was used to attack the fire from above, while other crews carried hose lines around all sides, authorities stated. A tenant in the three-story building called 911 to report smoke on the third floor, officials said.

A total of 17 adults and four children, ages 5, 6, 8 and 12, have been displaced from their homes, officials stated. The American Red Cross is assisting the residents with food, shelter and clothing.

No one was injured in the fire, officials said.

The cause of the fire remains under investigation.

Firefighters were on the scene for several hours into the early morning Thursday getting the fire under control. Crews remained on the scene throughout much of the day  cleaning up the debris and making sure all hot spots were doused. Crews also worked to keep neighboring buildings from catching fire.

Officials said the third floor is a total loss, with heavy smoke and water damage on the first and second floors.

The Herkimer, East Herkimer, Ilion, Little Falls, Cedarville, Salisbury and Dolgeville fire departments responded.