It happened at 4 p.m. in a three-story science building on 923 Bloom Walk. Los Angeles firefighters said. One person - who was not identified - was sent to the hospital in an unknown condition.
Firefighters evacuated everyone from the building. Investigators said crews checked every floor in the building and found no hazards or leaks. They said all air readings came out normal.Investigators are still working to figure out what exactly caused the explosion.
We have summarized this news so that you can read it quickly. If you are interested in the news, you can read the full text here. Read more: