Palace guards are questioning several men over the failed bomb attack on the Houses of Parliament last week. The five men arrested just before their planned attack Friday have been identified by the authorities as Catholic insurgents according to the sources close to the Crown.
One of the suspects, Guy Fawkes is said to have confessed that he was part of a terrorist plot by religious extremists to blow up members of the British government during the opening of parliament including representatives of the royal family.
A fifth man was also taken in for questioning over the IED found in the basement of Westminster Palace last week.
State security agencies are urging the public to remain vigilant to the threat of more attacks and report any suspicious activity to the authorities.