>> Emergency services rushing to the Natural History Museum in West London, after several people were injured when a car mounted the pavement outside the tourist attraction, according to British media. The incident is not being treated as terrorism related at this stage. Video posted on Twitter shows a man being detained by police.
Police had originally said the man was arrested at the scene, but later clarified he'd only been detained. A Reuters witness said despite the large numbers of police and armed officers, the atmosphere appears calm. A spokesperson for London's Natural History Museum told Reuters no one is being allowed into the building.
Police say inquiries are under way to establish the circumstances and any motive. Britain is on its second highest security alerts level, meaning an attack is highly likely. There's been five attacks described by authorities as terrorism this year alone, three involving vehicles. In March, three people were killed when a man drove a car into pedestrians on London's Westminster Bridge, and a police officer was stabbed to death in the grounds of Parliament.
In June, eight were killed when Islamist militants drove into people on London Bridge, and stabbed people at nearby restaurants and bars. The same month, a van was driven into worshippers near a mosque in North London, leaving one man dead.