A number of pedestrians were injured Saturday after a car collision near London’s Natural History Museum, London Metropolitan Police said.
A man was detained at the scene, police said. Earlier authorities had said a man was arrested.
The museum is in the bustling section of South Kensington, popular with both Londoners and tourists. The area was cordoned off by heavily armed police, according to video posted on social media. Helicopters buzzed overhead as ambulances rushed to the scene.
British Prime Minister Theresa May is being updated on the incident, according to her office.
A witness said a nearby Tube station was closed.
The cause of the collision is under investigation, police said. At this moment, police said it is not being treated as a terrorist incident but is being investigated as a serious one.
Nevertheless, the collision raised concerns after a series of terror attacks this year in London involving vehicles ramming pedestrians.
In June, three men drove a van into pedestrians on London Bridge before going on a stabbing rampage at bars at nearby Borough Market. The attack killed eight people and injured more than 40 others. The attackers were fatally shot by police.
Later that month, a van plowed into pedestrians near a mosque in north London, killing one man and injuring 11 people. The driver, Darren Osborne, 47, a resident of Cardiff in Wales, was arrested at the scene.
In March, a man drove into pedestrians on Westminster Bridge, killing four people.
The suspect, identified as a 52-year-old British man named Khalid Masood, also stabbed an unarmed police officer. An ISIS-affiliated news agency later claimed that the extremist group was behind the attack that injured 50 people. He acted alone, police said, but may have been inspired by ISIS.