Three Houston firefighters sustained significant burns after becoming trapped in a burning apartment building on Tuesday morning, officials say.

According to initial reports, no civilians were injured in the fire, but three firefighters sustained injuries of varying severity.

Three Houston firefighters are being treated for severe burns after a harrowing rescue operation in the early hours January 7th. The firefighters were trapped behind a door during an apartment fire, but their bravery saved multiple lives.

In response to reports of people trapped in a fire, Houston Fire Department crews were dispatched to an apartment complex in the 4800 block of Jarmese Street around 5:35 a.m. Tuesday, Brent Taylor, a spokesperson for the fire department said.

Three firefighters suffered second- and third-degree burns after being trapped behind a heavy door while searching an ablaze apartment Tuesday morning.

The Houston Fire Department said it will be a long road to recovery for three Station 46 firefighters who were significantly burned while trapped by a heavy door, prompting a mayday call.