Before returning for emergency landing to the Los Angeles International Airport (LAX), the Boeing 777-200 operated by Delta Air Lines dumped jet fuel over Los Angeles.

The Delta Air Lines Flight 89 was en route to China, but declared emergency immediately after take-off and turned back for lading due to an issue with an engine, the airline said. Therefore, the fuel was dropped in order to avoid a potentially dangerous overweight landing.

However, the jet fuel shower form the Delta plane has fallen on five elementary and one high school. This has caused minor injuries to schoolchildren and adults who were out in the playground at the time the aircraft was flying over.

Over 30 people received injuries, mainly skin irritation and breathing problems. All the injured declined going to hospital, the Los Angeles County Fire Department said.

At first children thought that it was the water falling out of a clear sky, however, the Los Angeles County Fire Department confirmed it was jet fuel.

Caught this in Bell Gardens over my house NEWS SAID IT DROPPED FUEL OVER AN ELEMENTARY SCHOOL IN CUDAHY @KTLA @FOXLA @cnnbrk @UniNoticias @NBCLA @ABC7 @ABC @NBCNews @TelemundoNews pic.twitter.com/VG3HBpyYtn

— Sujey Hernandez (@SujeyHernandez) January 14, 2020

Emergency fuel dump is a legal procedure necessary to follow in order to reduce landing weigh. However, according to the FAA, when a plane is going to dump fuel before going into or out of any major US airport, the flight crew has to follow certain procedures.

“These procedures call for fuel to be dumped over designated unpopulated areas, typically at higher altitudes so the fuel atomizes and disperses before it reaches the ground”, the FAA said in a statement published on its official Twitter account.

Thus, the circumstance of the incident are under the FAA investigation. The officials of the carrier  “share concerns regarding reported minor injuries to adults and children.”