A second man has been arrested by detectives investigating the Parsons Green Tube attack.
A second man has been arrested by detectives investigating Friday’s terrorist attack at Parsons Green, which left 30 people injured when a homemade bomb exploded during peak hour.
The 21-year-old was arrested in the suburb of Hounslow in London’s west just before midnight (local time), the Metropolitan Police force said in a statement.
He was detained under Britain’s Terrorism Act and taken to a south London police station but has not been charged or identified, the force added.
Earlier on Saturday (local time) police arrested an 18-year-old man in the city of Dover — the main ferry link to France — and raided a property in Sunbury, a small town outside London, as they hunted for whoever planted the device.
Hounslow is about six kilometres from Sunbury, where police raided and searched a building in connection with the bombing.
Neighbours were ordered to evacuate immediately and kept away for nearly 10 hours before being allowed to return to their homes, with authorities establishing a 100-metre cordon around the building.
Police described the evacuation as a “precautionary measure”.
“We are still pursing numerous lines of enquiry and at a great pace,” counter-terrorism coordinator Neil Basu of the London police said late on Saturday.
Police were also continuing to comb through CCTV images as part of the investigation.
The train hit by the bomber had video cameras in each car, and the London Underground network has thousands of cameras at the entrances to stations and along the labyrinth of subterranean and aboveground passageways leading from the entryway to the trains.