Deer Park accident: 4 killed after car crashes into Long Island nail salon

Four people were killed and nine were hospitalized after a car crashed into a nail salon in Deer Park, Long Island, officials said.

The incident unfolded at Hawaii Nail & Spa inside a strip mall on Grand Boulevard near Brandywine Drive Friday afternoon.

Police said a motorist in a minivan "drove through the building, all the way through the building." Several people were trapped, and at least one person was airlifted to the hospital.

The driver was partially conscious when first responders arrived on the scene, according to police. The driver was also taken to the hospital.

The car remains inside the salon.

The cause of the crash is unknown, and it is unclear if it was accidental or intentional. It is also unknown if children were inside the building at the time, and whether employees or customers were injured.

The driver and victims' identities haven't been released.