I was sentenced under the terrorism law for not informing the authorities about the explosion in Sultan park.
The police did not identify the detainees, who can be held for two weeks without charge or trial under terrorism laws.
The terrorism law, which has not been tested in court before, does not detail what compensation should be given.
What does the Supreme Court ruling on the federal terrorism law mean for free speech rights?
Four of the five were arrested under terrorism laws on board the plane shortly after it landed, the police said.
Britain's terrorism laws allow the men to be held for questioning for 14 days.
Senate Democrats said the banking controls must be considered as a package with the new terrorism law.
The four were arraigned on many charges, including violating the terrorism law set up after the Sept. 11 attacks.
Under British terrorism laws, police can detain suspects for up to 28 days without bringing formal charges.
Given the recent terrorism laws, such things could also fall under anti-terror legislation.