The period of initial detention was up to 48 hours, this could be extended by a maximum of five additional days by the Home Secretary.
Embassy officials were also with Ms. Casolo throughout her initial detention and interrogation.
Father Ndikuriyo was rearrested, less than two weeks after the end of his initial detention.
The ISA permits an initial detention of two months for investigation, followed by a two-year jail sentence which can be renewed indefinitely.
Mr. Hutchinson said initial detention was often necessary to establish the identity of refugees traveling with false papers, to make sure they are not a danger.
Kerviel's initial 24-hour detention was extended to 48 hours while French law enforcement questioned him about possible accomplices.
Al-Zaidi suffered injuries as he was taken into custody and some sources said he was tortured during his initial detention.
In a hearing on Saber's initial detention, a prosecutor told the court that Saber had insulted Muhammad, Jesus, Mary, Gabriel, and "God himself."
Mr. Ali-Haimoud was released a few months after his initial detention and got a job selling ice cream at Detroit Metropolitan Airport.
None of the arrestees had access to legal counsel during their initial detention.