The House of Lords will investigate how three protesters were able to get around parliamentary security to protest during the visit of Canadian Prime Minister Stephen Harper, a spokesman said.
– House of Lords' spokesman.
Three protesters were detained at 12 noon today by parliamentary security staff while trying to access non-public rooms in Parliament.
They attempted to protest during the prime minister of Canada's visit to Parliament.
The business of Parliament was unaffected. A full investigation is under way.