British authorities have arrested a second man in connection with the bombing of a London Underground train on Friday, officials said Sunday.
The 21-year-old man was arrested late Saturday in Hounslow, west London, by detectives from the London Metropolitan Police Counter Terrorism Command.
In Friday’s incident, at Parsons Green station, an improvised device exploded as a train arrived during the morning rush hour, injuring 30 passengers.
“(The second man) was arrested under section 41 of the Terrorism Act and taken to a south London police station where he remains in custody,” police said in a statement Sunday.
A search is taking place at a property in Stanwell, Surrey, in connection with this arrest, police added.
The arrests are part of a major manhunt for the perpetrators of Friday’s attack. Police had previously arrested an 18-year-old suspect in the departure area of the port of Dover on Saturday. Dover is major port town about 80 miles southeast of London.
The teen was taken into custody “on suspicion of being concerned in the commission, preparation or instigation of acts of terrorism,” authorities said.
Meanwhile police were still searching a residential address west of London in Sunbury-on-Thames, Surrey, on Sunday, with residents from surrounding buildings evacuated as a “precautionary measure.”
Officers were seen entering and exiting a lilac-painted property on Cavendish Road, which had been cordoned off.
Reporters at the scene attracted attention from residents, some of whom said they would be surprised if anyone in Sunbury was connected with the bombing.
The house is believed to be owned by an elderly couple known for fostering hundreds of children — including refugees — and who were honored by the Queen for their work with MBE (Member of the British Empire) medals in 2010, according to reports widely circulated in British media on Sunday. London’s Metropolitan Police has not confirmed those reports.
Threat level lowered
The UK’s terror threat level was downgraded from “critical” back to “severe” on Sunday, the country’s Home Secretary Amber Rudd said in a televised statement.
A Home Office spokesperson also told CNN that the threat level had been lowered.
London’s Metropolitan Police said in a statement that the “high pace and rapid progress” of the investigation is continuing and that although it is not complete, that progress has allowed the Joint Terrorism Analysis Center — the independent body that assesses threat…