A man in Sweden didn't like the way his son-in-law was acting, so he sent a note to the FBI accusing the guy of being an Al Qaeda operative just before he took a trip to the USA. When he landed, the DHS held him in a cell for 11 hours, then deported him. Can't be too safe, dontcha know.

The wife didn't want him to travel since she was sick and wanted him to help care for their children, regional daily Sydsvenska Dagbladet said without disclosing the couple's names.

When the husband refused to stay home, his father-in-law wrote an email to the FBI saying the son-in-law had links to al-Qaeda in Sweden and that he was travelling to the US to meet his contacts.

He provided information on the flight number and date of arrival in the US.

The son-in-law was arrested upon landing in Florida. He was placed in handcuffs, interrogated and placed in a cell for 11 hours before being put on a flight back to Europe, the paper said.