ST. CHARLES, Mo. (KSDK) -- A firefighter was injured in an apartment fire in St. Charles Friday night.
The fire broke out in the 5200 block of Sun Lake Drive just before 10:00 Friday night.
Officials say the fire started on the second floor of an apartment, and it was mostly contained to that unit.
The 3 people inside the apartment were not injured, but residents living in 3 apartments have been relocated.
A firefighter was injured when he was fighting the flames. It's believed the firefighter's injuries are not serious, and they're still investigating how the fire started.
NewsChannel 5 will bring you more information as it becomes available.