RCMP say they have stepped up security on Parliament Hill in response to a protest by Greenpeace activists who scaled the centre and west blocks of the Parliament Buildings on Monday.
The protesters draped the building with banners advocating government action to combat climate change.
Following the protest, Ottawa police said they arrested 19 of the protesters who had climbed the buildings and one organizer on the ground.
In a written statement, the RCMP said they have increased security measures pending a full review of what happened.
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