Nine people were injured Saturday morning in a two-alarm fire in a Bronx apartment building, officials said.

The fire broke out in a third-floor apartment of the six-story building on Grand Avenue, near Fordham Road in University Heights just after 6 a.m., the FDNY said.

None of the injuries were considered life-threatening, fire officials said.

The cause of the fire is under investigation, the FDNY said.

More than 100 firefighters responded to the blaze.