On Friday evening the UK terror threat was raised to critical – the highest level – meaning an attack may be imminent.<\/p>\n
Mr Basu said the public should remain vigilant, as the force was not changing its “protective security measures” and extra armed officers were still being deployed.<\/p>\n
He added: “This arrest will lead to more activity from our officers.<\/p>\n
“For strong investigative reasons we will not give any more details on the man we arrested at this stage.”<\/p>\n
The man is due to be moved from Kent to a south London police station later.<\/p>\n
Operation Temperer, which involves the use of the military and was put in place after the threat level was raised, is being stepped up gradually.<\/p>\n
Home affairs correspondent Danny Shaw said it is focused on London and the south-east of England and is being described as “light-touch”, and not on the same scale as what was seen after the\u00a0Manchester Arena attack.<\/p>\n
Mayor of London Sadiq Khan said “significant” police activity would continue over the weekend and thanked police, adding: “They are there to keep us safe”.<\/p>\n By BBC security correspondent Frank Gardner<\/strong><\/p>\n This is the fourth time the UK national terror threat level has been raised to “critical” since the system was made public in 2006.<\/p>\n The last time was in May this year following the Manchester Arena bombing, when it was wrongly thought that the bomb-maker was still at large and could strike again.<\/p>\n In the case of\u00a0Parsons Green\u00a0it is perhaps surprising that it took the government so long – over 12 hours – to raise the threat level to critical, under advice from the Joint Terrorism Analysis Centre, when it was obvious the perpetrator had neither died nor been caught.<\/p>\n Each time the level has gone to critical, it has only stayed at this highest level of alertness for three to four days – this is partly as it involves an unsustainably high tempo for the police, intelligence and security services.<\/p>\n Extra patrols are mounted on the streets of London, covert surveillance is stepped up and troops are deployed to free up police officers to focus on the main effort: catching the bomber before he can plant another device.<\/p>\n But the very fact that yesterday’s attack took place with no warning shows this system is only a broad guide to the threat and simply reflects the latest assessment.<\/p>\n The BBC understands CCTV images have been obtained of the person suspected of planting the explosive device.<\/p>\n The Islamic State group has said it was behind the bomb, which detonated at 08:20 BST on Friday.<\/p>\n It is understood the device had a timer, but the BBC’s security correspondent Frank Gardner said the bomb appeared not to have gone off properly.<\/p>\n Had it worked as intended, it would have killed everyone around it and maimed everyone in the train carriage for life, he said.<\/p>\n The Met’s Assistant Commissioner Mark Rowley said it was “very routine” for the Islamic State group to claim the attack, whether in contact with those involved or not.<\/p>\n Police have spoken to 45 witnesses so far and have received 77 images and videos from the public.<\/p>\n They urge anyone with information to get in touch and to upload pictures and video to the website\u00a0www.ukpoliceimageappeal.co.uk\u00a0or to call the Anti-Terrorist Hotline on 0800 789 321.<\/p>\n –<\/p>\n Source: BBC<\/p>\n","protected":false},"excerpt":{"rendered":" An 18-year-old man has been arrested on suspicion of a terror offence in connection with Friday’s attack on a London Tube train. The man was held in Dover on Saturday by Kent Police and taken to a local police station. The arrest is “significant” but the terror threat level remains at “critical”, Metropolitan Police Deputy […]<\/p>\n","protected":false},"author":14,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"jnews-multi-image_gallery":[],"jnews_single_post":[],"jnews_primary_category":[],"jnews_social_meta":[],"jnews_override_counter":[],"footnotes":""},"categories":[107],"tags":[3,11169,11170],"class_list":["post-353982","post","type-post","status-publish","format-standard","hentry","category-international","tag-ghana-news","tag-parsons-green","tag-tube-testing"],"_links":{"self":[{"href":"https:\/\/citifmonline.com\/index.php?rest_route=\/wp\/v2\/posts\/353982","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/citifmonline.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/citifmonline.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/citifmonline.com\/index.php?rest_route=\/wp\/v2\/users\/14"}],"replies":[{"embeddable":true,"href":"https:\/\/citifmonline.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=353982"}],"version-history":[{"count":0,"href":"https:\/\/citifmonline.com\/index.php?rest_route=\/wp\/v2\/posts\/353982\/revisions"}],"wp:attachment":[{"href":"https:\/\/citifmonline.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=353982"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/citifmonline.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=353982"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/citifmonline.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=353982"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}![\"Police](\"https:\/\/ichef.bbci.co.uk\/news\/624\/cpsprodpb\/FF66\/production\/_97828356_3c2c355f-b578-493c-b48a-8835131a4035.jpg\")
<\/span><\/figure>\n