Deputy Chief Constable John Campbell said:
“I would like to reassure you that the move to critical is something that we prepare for. We will continually review our deployments and take all possible steps to keep people safe within Oxfordshire, Buckinghamshire and Berkshire.
At this time we need everyone to remain alert but not alarmed. We need your help to help us protect our communities and disrupt those who seek to harm us. I would urge you to contact the police straight away if you believe that someone is acting suspiciously.
Our officers and staff will continue to provide a visible presence in our communities and we have the specialist resources in place to respond in an emergency.”