Mr Croucher, now a security consultant, was questioned on his links to the UK Ministry of Defence, it was said.
In a statement his family said they were suffering from “immense stress” and the case was “made up and ridiculous”.
They said: “We’re shocked at the set of circumstances which have played out over the last seven months. Matt was due to only be away for a couple of weeks, returning through Dubai after working in the Middle East on his way home.
“We don’t understand why it’s taking the Dubai authorities so long to process this case, being constantly told it should be resolved in a week or two, a case we believe to be made up and ridiculous.”
