Police have urged continued vigilance as armed police patrols across Norfolk and Suffolk which began in the wake of the Parsons Green tube terror attack have been stepped down.

Paul Sanford, Norfolk's T/Assistant Chief Constable Paul Sanford, confirmed the end of the extra patrols after Joint Terrorism Analysis Centre lowered the threat level from critical to severe yesterday.

T/ACC Sanford said: 'Rest assured, the threat level and our response are constantly under review. If the threat level changes again we will be ready to put our plans back in place.

'I would continue to ask the public to remain calm but alert – if you see anything which causes you concern, then call the police immediately.

'Look out for anything that seems out of place, we would rather investigate concerns which come to nothing, than hear an incident could have been prevented.'

Suffolk's Assistant Chief Constable Rachel Kearton has confirmed to residents that additional armed policing patrols will cease this evening.

More information can be found at www.gov.uk/ACT