Three firefighters were hurt on Wednesday while battling a 4-alarm fire at an apartment complex in Mercer County, according to officials.

The fire broke out at the Princeton Junction Avalon apartment complex located at 8 Taylor Court in West Windsor. The fire started around 3:15 p.m. inside Building 8.

The fire damaged a significant portion of the building. Thick smoke could be seen pouring out of the building.

Officials say that at least 24 units were damaged. The American Red Cross is helping the residents who have been displaced.