TOKYO — A fire broke out at an elementary school in downtown Tokyo Friday, but all of about 300 students and teachers were evacuated or rescued, officials said.

The Tokyo Fire Department said the fire at the Takinogawa No. 3 Elementary School broke out near a music room on the top floor of the four-story building late morning Friday.

Firefighters rescued one teacher and several schoolchildren out of the building, with non-life-threatening injuries, the department said.

Television footage showed black smoke billowing out of windows on the fourth floor, as firefighters combated the fire at the scene. Dozens of fire engines were deployed.

All others inside the building when the fire broke out had evacuated to a nearby park on their own and no one was left behind, officials said.

The cause of the fire is still under investigation.