Two planes collide mid-air at California airport

Authorities confirmed there were “multiple casualties” after two planes crashed mid-air over the Watsonville Municipal Airport Thursday afternoon, city Fire Department Division Chief Rudy Lopez told CNN.

A single-engine Cessna 152 and a twin-engine Cessna 340 collided during their final decent into the airport, according to a statement from the Federal Aviation Administration.

One person was on board the Cessna 152 and two people were on board the Cessna 340, the FAA statement said.

No one was injured on the ground, the FAA added.

Both the FAA and National Transportation Safety Board are investigating, the FAA statement said.

In a post on Twitter, the NTSB confirmed it was investigating the mid-air collision.

It is not clear what caused the two planes to collide.