Five men were arrested today by police investigating a suspected plot to harm the Pope.
Scotland Yard officers swooped on several people after information emerged that Pope Benedict XVI could be in danger.
A multimillion-pound operation was put in place to protect the Pope during his tour of Scotland, London and the West Midlands.
The men were arrested by officers from the Met's Counter Terrorism Command shortly before 6am.
The suspects, aged 26, 27, 36, 40 and 50, were held under the UK's Terrorism Act 2000 at business premises in central London.
They were taken to a central London police station, where they will be interviewed by detectives.
A Metropolitan Police spokesman said the business was being searched, as well as homes in north and east London.
A spokesman said: “Initial searches have not uncovered any hazardous items. Today’s arrests were made after police received information. Following initial inquiries by detectives, a decision was made to arrest the five men.
“Following today’s arrests the policing arrangements for the Papal visit were reviewed and we are satisfied that our current policing plan remains appropriate.
“The itinerary has not changed. There is no change to the UK threat level.”