Scotland Yard detectives have been granted more time to question three men suspected of hatching a Islamist terror plot.
Armed police arrested the men – one in his 20s at a business address in Letchworth, Hertfordshire, and another two, aged in their 20s and 30s, in Luton, Befordshire – on 14 July on suspicion of being involved in the commission, preparation or instigation of acts of terrorism.
Officers from the UK's national counter-terrorism network, led by the Met's Counter-Terrorism Command (SO15) and supported by colleagues from Bedfordshire Police and the Eastern Counter-Terrorism Intelligence Unit, carried out the operation.
They were also assisted in the execution of one of the arrests by officers from the Met's Specialist Firearms Command. No shots were fired.
A search of one of two addresses in the Luton area has concluded; officers continue to search the other property.
The arrests and searches are part of an ongoing investigation into Islamist-related terrorism.