The suspected kidnapping became known at the end of last week.
According to information provided to Aftonbladet, several people broke into a home in southern Sweden the night before last Friday, after which they took the child away under threat. The child was found later that day by Danish police at Kastrup Airport outside Copenhagen.
Prosecutor Lisa Hedberg tells TT that the child is now with his family.
Two people in their 25s were requested to be detained, which P4 Jönköping was the first to report.
Both were arrested on Friday afternoon.
The man is suspected of aggravated trespassing, aggravated unlawful threat, unlawful detention and assault. The woman is suspected of one count of unlawful detention.
They deny the crime, says Lisa Hedberg.
Corrected: In a previous version, there was an incorrect location in the title.
