Michael Miske died of "toxicity of fentanyl and para-fluorofentanyl," the medical examiner’s office said in a statement obtained by AP. The death appears to have been accidental.

Customers on a Delta Air Lines flight from Seattle to Honolulu were delayed by several hours after someone snuck on board. The Atlanta-based airline released a statement to ABC News on Thursday afternoon that confirmed an “unticketed passenger” made their way onto the Christmas Eve flight and had to be removed from the plane.