Mystery is swirling around the pilot killed in Sunday's Super Bowl plane crash.

In addition to the pilot, four people in a house in Yorba Linda, California, were killed after the plane fell out of the sky and hit the residence, where football fans had gathered to watch the big game. Video showed flames billowing out of the wreckage of the home. 

Now, we're learning more about the pilot, 75-year-old Antonio Pastini, who had posted a cryptic message on Facebook shortly before the tragedy, announcing he was deleting his account. 

"My friends can messenger me, text me, or call me," Pastini wrote. "If that is too difficult, you were never my friend to start with. This is the last post and last time I will open FB."

Authorities said initially that Pastini was a retired Chicago police officer, based on documents and a police badge found following the crash, but upon more investigation they determined the credentials were actually fake.

Chicago police said they have no former officer by the name of Antonio Pastini and the badge found in the wreckage had the same number as one actually reported lost in 1978.

Pastini's daughter, Julia Ackley, has also since come out and said her father's real name is Jordan Isaacson. According to Ackley, he owned a couple of restaurants in Nevada. 

Chicago police have no record of an officer by that name either. 

"I'd prefer not to comment and let investigators do their job," Ackley told KABC when reporters tracked her down Tuesday. "My father is exactly who he said he was."

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