United Kingdom threat level remains at critical: minister

United Kingdom threat level remains at critical: minister

The terror threat level has been reduced from "critical" to "severe" after a teenager arrested at the Port of Dover was among two taken into custody in conjunction with the Parsons Green Tube terror attack.

An 18-year-old man was arrested in the departure area of Dover port earlier on Saturday in connection with the attack.

The terror threat remains at critical - the highest level.

Britain's interior minister said a claim by US President Donald Trump that the culprits behind a bombing on a London train were in the sights of the police, made on Twitter shortly after the attack, had been nothing more than speculation.

"The joint terrorist analysis centre, which reviews the threat level that the United Kingdom is under, has chose to lower that level from critical to severe".

Thirty people were injured in the explosion, none of them seriously, in the wake of the subway blast, prompting the police to stage a massive hunt for those who are responsible for the fifth terrorist attack in the country over the past six months.

"I would urge everybody to continue to be vigilant but not alarmed", she said.

Searches are taking place at a residential address in Stanwell, Surrey, in connection with the arrest, Scotland Yard said.

Soldiers who had been drafted in to guard public sites in order to free up police resources will "return to their original positions" over the next few days, Ms Rudd said.

"The police have made very good progress".

The health service said Sunday that one person is still being treated at Chelsea and Westminster Hospital, which has a special unit for treating burns.

The two suspects - one is 18 and the other is 21 - were arrested by British police on Saturday.

Five hours later, armed police raided a home in posh Sunbury-on-Thames that belongs to Ron and Penny Jones, who received an MBE in 2009 for fostering hundreds of kids.