The fire was contained to the attic, but it set of sprinklers throughout the building.
One person was sent to the hospital with burns when two separate fires charred a one-story house and clogged a beachfront high-rise with smoke.
The three fires charred about an acre of land total.
The blaze erupted early this morning at Alameda Street and Sepulveda Boulevard.
One unit was destroyed and four others sustained water and smoke damage, but no injuries were reported, fire officials said.
The latest fire was reported around 10 p.m. in the 3300 block of East 59th Street, fire officials said.
The flames sent a large plume of smoke into the air over Long Beach and prompted crews to rush to the scene.
The flames broke out around 5 a.m. on the exterior of the terminal building and burned their way into the attic, according to the Long Beach Fire Department.
Firefighters were working to douse a blaze that engulfed at least one car in a Downtown Long Beach parking lot today.
The fire may have resulted from a blown seal, the dispatcher said, adding that a county fire department foam unit was requested.