United Kingdom threat level critical, military guards streets

There are reports some passengers suffered burns. Source 7 News

There are reports some passengers suffered burns. Source 7 News

As per the latest updated the British police and the Scotland Yard's counter-terrorism squad, investigating the attack, on Saturday, said that they had arrested an 18-year-old boy caught up doing moves described as insignificant.

Basu advised the public to "remain vigilant" and said their "complex investigation" into the attack is ongoing. "The police have made very good progress but the operation is ongoing", said interior minister Amber Rudd, adding that the threat level remained at "critical". For strong investigative reasons we would not provide more details on the man we arrested at this stage.

In May, a suicide bomber killed 22 people at an Ariana Grande concert in Manchester. Many have been told to stay in lockdown as police evacuated the area and placed a wide zone under a police cordon. After ISIS claimed responsibility for the attack, British Prime Minister Theresa May announced that the country's terror threat level has been raised from "severe" to "critical".

Presidential Spokesperson Ernesto Abella said the Duterte administration extended its sympathies to the victims of the blast during Friday's morning rush hour at Parsons Green station on a District Line train from Wimbledon.

Following the attack, media reported, citing sources, that the police had identified the suspect behind the attack with the help of CCTV camera recordings.

In the United Kingdom, a "critical" threat level implies the possibility of a further attack that is believed to be imminent.

May said military personnel would take over guard duty at certain closed "protected sites", freeing up 1,000 police officers to be deployed on the transport network and on streets across Britain.

The man is being held in a local police station but is set to be transferred to police custody in south London.

Police said 45 witnesses have been spoken to and 77 images and videos have been sent in by members of the public.