© Licensed to London News Pictures. 21/09/2017. London, UK. Police search teams begin working at a property on Thornton Heath, south London where a 17 year old was arrested last night. <br />
 This is the sixth arrest in connection with the bombing of an underground train at Parsons Green on September 15th. The bomb failed to fully explode but still injured 30 people. Photo credit: Peter Macdiarmid/LNP