British police made a “significant” arrest in the urgent manhunt for suspects a day after the London subway blast that injured more than two dozen people, authorities said Saturday.
Police said that an 18-year-old man was arrested by Kent police in the port of Dover on the English Channel. He is being questioned under the Terrorism Act. Dover is a major ferry port for travel between Britain and France.
“We have made a significant arrest in our investigation this morning,” Deputy Assistant Police Commissioner Neil Basu said. But he warned that the investigation was ongoing and the terrorist threat level remains at “critical,” meaning a government task force that includes the security services believes another attack is imminent.
Basu’s comments suggested that other dangerous suspects may still be at large.
The 18-year-old suspect hasn’t been charged or identified. Police say he will be brought to a south London police station for more questioning. Police haven’t said if he is suspected of planting the bomb or if he played a supporting role in a possible plot.
Authorities had increased the terrorism threat level to “critical” late Friday, after a bomb partially exploded during the morning rush hour.
Police are combing through closed-circuit TV images and have extensively studied the remains of the device without giving details about it. But images from inside the subway car after the blast showed that the device was contained in…