Two car bombs exploded in central London on Thursday night, a day after two bombs planted by the Irish Republican Army went off in the city's theater district.
No one immediately claimed responsibility for Thursday's blasts. But the IRA said it set off the two small bombs Wednesday to coincide with this week's conference of the ruling Conservative Party in the southern coast city of Brighton.
One person was treated for shock after the first explosion Thursday, officials at nearby Guy's Hospital said. There were no immediate reports of injuries in the second attack.
The blasts threw traffic into chaos. Police shut down half the city's subway lines and evacuated roads surrounding the explosions.
The first blast Thursday was reported at 9:20 p.m. on Tooley Street, in a car near the busy London Bridge train station. The second bomb exploded at 10:30 p.m. in Melcombe Street, near Paddington train station in northwest London.