Authorities are putting tight security in place in London in preparation for the funeral of Queen Elizabeth II, an event to be attended by a large number of dignitaries from home and abroad.
The state funeral is scheduled to be held at Westminster Abbey on Monday.
Barricades were erected around the church on Friday. The area has been closed to vehicular traffic and numerous police officers are on guard.
The BBC has reported that about 500 dignitaries, including royalty from various countries, will be among the guests.
It says about 1,500 military personnel have been deployed since Tuesday night and thousands of police officers are taking up positions in central London every day.
The public broadcaster reports that the scale of the security operation is unprecedented and notes that it has been compared to that of the London Olympics in 2012.
Meanwhile, two police officers were stabbed on Friday morning in an area about a 20-minute walk from Westminster Abbey. Police said it was not terror-related.