Cornelius Petrus Jakobus van der Walt, 37, had ketamine levels in his blood above what would be considered impaired for driving, according to an autopsy.
Chayton Wiescholek died along with three others in an Arizona hot air balloon crash. His girlfriend, Kinsey Taylor, had jumped out minutes earlier for a planned skydive.
Victims identified in Arizona hot air balloon crash that killed 4 wsgw.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from wsgw.com Daily Mail and Mail on Sunday newspapers.