Air ambulance crew administered drug to hot air balloon pilot after crash that killed 4, report says

PHOENIX (AP) — Authorities trying to determine whether drugs were involved in a fatal hot air ballon crash in Arizona released an amended autopsy report stating an anesthetic was administered to the pilot by an air ambulance company. The Pinal County Medical Examiner’s Office said earlier this week that toxicology tests showed Cornelius van der Walt had a high amount of ketamine in his blood following the Jan. 14 fatal accident  that killed him and three passengers, but did not specify how it got into his system or when. The amended report released Friday clarifies the ketamine was administered by the company that transported him to a hospital. The balloon plummeted about 2,000 feet to the desert floor south of Phoenix near Eloy. Investigators do not yet know the cause of the crash.