A child has died of a suspected cardiac arrest aboard a flight departing Los Angeles International Airport, multiple news outlets reported. Paramedics responded last night to render medical aid to the 10-year-old girl, but “all efforts were futile, and the child was beyond medical help,” the Los Angeles Fire Department said in an alert. The girl was on Delta Flight 2423 from LAX to Seattle when an unspecified medical emergency occurred. The plane turned around while still over Southern California to return to LAX, but the child was pronounced dead by paramedics upon landing. The Los Angeles Police Department will investigate the death.