Robin Simonsson, a spokesman for Sweden's prosecution authority said "the man is no longer suspected of any crime."
Simonsson declined to say what was found in the man's luggage at the Landvetter airport outside Goteborg that led to his arrest Thursday.
He told The Associated Press that the police investigation didn't point in the direction of a report by the local Goteborgs-Posten daily saying it was a chemical compound known as TATP, a peroxide-based explosive that has often been employed by Islamic extremists.
The man was not identified by name in line with Swedish practice.
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