TOPSHOT - This general view shows police vehicles at the scene early on June 19, 2017, after a vehicle hit pedestrians in north London. One man was killed and eight people hospitalised when a van ran into pedestrians near a mosque in north London in an incident that is being investigated by counter-terrorism officers, police said on June 19. / AFP PHOTO / Chloe Jihyeon LEE (Photo credit should read CHLOE JIHYEON LEE/AFP/Getty Images)
LONDON, ENGLAND - JUNE 19: Labour leader Jeremy Corbyn (C-L) looks on as community and religious leaders speak at the scene of a terror attack in Finsbury Park in the early hours of this morning, on June 19, 2017 in London, England. Worshippers were struck by a hired van as they were leaving Finsbury Park mosque in North London after Ramadan prayers. One person was killed in the terror attack with a further 10 people injured. (Photo by Carl Court/Getty Images)
TOPSHOT - Muslims pray on a sidewalk in the Finsbury Park area of north London after a vehichle hit pedestrians, on June 19, 2017. One person has been arrested after a vehicle hit pedestrians in north London, injuring several people, police said Monday, as Muslim leaders said worshippers were mown down after leaving a mosque. / AFP PHOTO / Daniel LEAL-OLIVAS (Photo credit should read DANIEL LEAL-OLIVAS/AFP/Getty Images)
TOPSHOT - Police guard a street in the Finsbury Park area of north London where a vehichle hit pedestrians on June 19, 2017. One person has been arrested after a vehicle hit pedestrians in north London, injuring several people, police said Monday, as Muslim leaders said worshippers were mown down after leaving a mosque. / AFP PHOTO / Daniel LEAL-OLIVAS (Photo credit should read DANIEL LEAL-OLIVAS/AFP/Getty Images)
LONDON, UNITED KINGDOM - JUNE 19 : Prime Minister of the United Kingdom Theresa May visits Finsbury Park Mosque after a vehicle mows down Muslim worshippers in London, England, United Kingdom on June 19, 2017. (Photo by Mehmet Er/Anadolu Agency/Getty Images)
