Dozens of residents woke up to their Bronx apartment building in flames Friday morning, according to fire officials.

The FDNY told News 12 the fire started on the second floor of an apartment at 1240 Walton Ave. The fire then spread to the third floor.

Firefighters say they were able to put the flames out within 10 minutes.

One firefighter had minor injuries, but no one was seriously injured.

The cause of the fire is under investigation.